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ุจุณู… ุงู„ู„ู‡ ุงู„ุฑุญู…ู† ุงู„ุฑุญูŠู… ุงู„ูŠูˆู… ุฅู† ุดุงุก ุงู„ู„ู‡ ู†ุจุฏุฃ ุญู„ู‚ุฉ
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ุฌุฏูŠุฏุฉ ุญู„ู‚ุฉ 6 ุชุชูƒู„ู… ุนู† ูˆุงุญุฏุฉ ู…ู† ุงู„ู…ุดุงุฑูƒุงุช ุงู„ุนุงู…ุฉ ููŠ
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ุงู„ุงุณุชุงุชูŠูƒูŠุฉ ุงุณู…ู‡ุง ุงู„ู…ุดุงุฑูƒุฉ ุงู„ุทุจูŠุนูŠุฉ ุญู„ู‚ุฉ
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6 ุงู„ู…ุดุงุฑูƒุฉ
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ุงู„ุทุจูŠุนูŠุฉ
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ุงู„ุงู† ู…ุงุฐุง ูŠุนู†ูŠ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ
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ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ
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ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ
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ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ
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ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ
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ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ
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ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ
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ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ
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ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุน
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around the mean and all measures of centered
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tendency are roughly equal I mean mean, median and
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mode are roughly equal ุชู‚ุฑูŠุจุง ู…ุชุณุงูˆูŠุฉ ุงุฐุง ุงู„ mean
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equal median equal modeู„ุฐู„ูƒ ุงู„ุงู†ุชุฌุงุฑ ุงู„ุนุงุฏู‰ ูŠุญุชูˆูŠ
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ุนู„ู‰ ุซู„ุงุซ ู…ูŠุฒุงู†ูŠู† ูŠุจุฏูˆ ู…ุซู„ู‹ุง ุจูŠู„ ุดูŠุจุฏ ู…ูŠุฒุงู†ูŠ ุญูˆู„
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ุงู„ู…ูŠุงู† ูˆูƒู„ ู…ูŠุฒุงู†ูŠ ุงู„ุชุฌุงุฑุจ ุชู‚ุฑูŠุจู‹ุง ุฃูˆ ุชู‚ุฑูŠุจู‹ุง ู…ุซู„ู‹ุง
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ุฎู„ู‘ูŠู†ูŠ ุฃุจุฏุฃ ุงู„ุชูˆุฒูŠุน ุงู„ุทุจูŠุนูŠ ุจุขูŠุฉ ู‚ุฑุฃู†ูŠุฉ ุจุชูุณุฑ
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ุงู„ู…ุนู†ู‰ ู„ู„ุชูˆุฒูŠุน ุงู„ุทุจูŠุนูŠุŒ ุงู„ู…ูู‡ูˆู… ุชุจุน ุงู„ุชูˆุฒูŠุน
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ุงู„ุทุจูŠุนูŠ ููŠ ุงู„ุตูˆุฑุฉ .. ุฅูŠู‡ ุงู„ู„ูŠ ูƒุชุนุฑููŠู‡ุง ูŠุนู†ูŠ ู„ู„ุนู„ู…
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ุจุงู„ุดูŠุกุŸ ุตูˆุฑุฉ ุงู„ุฑูˆู…ุŒ ุขูŠุฉ 54 ุงู„ู„ู‡
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ุงู„ุฐูŠ ุฎู„ู‚ูƒู… ู…ู† ุถุนู
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ู„ุญุธุฉ ุถุนู ูŠุนู†ูŠ ุงู„ุจุฏุงูŠุฉ ุฎุงู„ุต ุงู„ู„ูŠ ู‡ูŠ ุงู„ู…ู†ุทู‚ุฉ ุงู„ู„ูŠ
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ู‡ู†ุง ุจุชุนุฑู ู„ุญุธุฉ ุจูŠู†ูŠ ูˆู„ุง ุฏู‡ ุตุบูŠุฑ ูŠุนู†ูŠ ูˆู„ุง ุฏู‡ ุตุบูŠุฑ
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ุจุนุฏูŠู† ู…ุงุจุจุฏุงูŠุด ุจูŠูƒุจุฑ ุดูˆูŠุฉ ุดูˆูŠุฉ ู„ุบุงูŠุฉ ู…ุง ูŠุตู„ ูˆูŠู†
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ุงู„ู‚ู…ุฉ ู…ุฑุงุญุฉ ุงู„ุดุจุงุจ ุงู„ู„ูŠ ู‡ูŠ ุงู„ู‚ูˆุฉ ุงู„ู„ู‡ ุงู„ุฐูŠ ุฎู„ู‚ูƒู…
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ู…ู† ุถุนู ุซู… ุฌุนู„ู‡ ู…ู† ุจุนุฏ ุถุนู ู‚ูˆุฉ
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ู„ุฐู† ุงู„ุชูˆุฒูŠุน ุจูŠุจุฏุฃ ุตุบูŠุฑุŒ ุจุนุฏูŠู† ุจูŠุจุฏุฃ ุจุงู„ุชุณุงุนุฏ ู„ุบุงูŠุฉ
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ู…ุง ูŠุญุตู„ ุงู„ู‚ู…ุฉ ุชุจุนุชู‡ุŒ ุซู… ุฌุนู„ู‡ ู…ู† ุจุนุฏ ู‚ูˆุฉุŒ ุงู„ู‚ูˆุฉ
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ุงู„ู„ูŠ ู‡ู†ุงุŒ ุชูŠุฌูŠ ุถุนู ู‡ู†ุงุŒ ูˆ ู…ุด ุจุนุฏ ุงู„ุถุนูุŒ ุดูŠุจุฉุŒ ุซู…
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ุฌุนู„ู‡ ุจุนุฏ ู‚ูˆุฉุŒ ุถุนู ูˆ ุดูŠุจุฉ
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ุจุงู„ุธุจุท ู‡ุฐู‡ ุฏูˆุฑุฉ ุญูŠุงุฉ ุงู„ุฅู†ุณุงู†ุŒ ู…ุด ู‡ูŠูƒุŸ ุฏูˆุฑุฉ ุญูŠุงุฉ ุฃูŠ
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ูˆุงุญุฏุŒ ุฅู†ุณุงู† ูˆุบูŠุฑ ุฅู†ุณุงู†ุŒ ุจูŠุจุฏูˆ ุตุบูŠุฑุŒ ุจูŠูƒุจุฑ ุชุฏุฑูŠุฌูŠุŒ
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ุจูŠุตู„ ู„ู„ู‚ู…ุฉุŒ ูˆ ุจุนุฏูŠู† ุจูŠู†ุชู‡ูŠุŒ ูุทู„ุนุช ู…ุซู„ุง ุจูŠุตู„ ู„ู„ู‚ู…ุฉุŒ
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ู†ูุชุฑุถ ุฃู† ู‡ูŠ ุฑุจุนูŠู† ุณู†ุฉ ุชู‚ุฑูŠุจุงุŒ ู…ุด ู‡ูŠูƒุŸ
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ุจุนุฏ ุงู„ุนู„ู…ูŠุฉ ุจูŠุจุฏูˆ ูˆุงุญุฏ ุนุงูŠุดุŒ ูŠูƒุจุฑ ูˆ ุจุฎู„ุตู„ูˆ ูƒุงู†
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ุงู„ุงุฑุจุนูŠู† ููŠ ุงู„ู…ุชุตู ุจุณู…ูŠู‡ symmetric distribution
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ุชูˆุฒูŠุน ู…ุชู…ุซู„ ู…ุน ูƒุฏู‡ ุงูŠุด ู…ุชู…ุซู„ ูŠุนู†ูŠ ุงู„ area to the
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right equals area to the left ู…ุน ูƒุฏู‡ the minimum
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splits the curve into two equal pieces ุงุชู†ูŠู† ุฒูŠ
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ุจุนุถ ูˆุงุญุฏ ุงู„ right ูˆุงู„ุชุงู†ูŠ ุงู„ left ุฒูŠ ู…ุง ุญูƒูŠุช ุงู„ุฃูˆู„
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ุฃูƒุชุฑ ุชูˆุฒูŠุน ู…ุนุฑูˆู ุงู„ normal distributionูˆู‡ุฐุง ู‡ุงุฑูƒุฒ
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ุนู„ูŠู‡ ุทุจุนุง ุงู†ุช ุจุงู„ู†ุณุจุงู„ูƒ ู…ู‡ู… ุฌุฏุง ุงู†ุช ูุงู‡ู…ูŠู† ุงู†ู‡
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ุจูŠุนุชู…ุฏ ุนู„ูŠู‡ ูƒู„ ุงู„ chapters ุงู„ู„ูŠ ุฌุงูŠุฉ ูŠุนู†ูŠ ู„ุบุงูŠุฉ ู…ุง
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ูŠุฎู„ุต ุงู„ semester ูƒู„ ุดุบู„ ุนู„ู‰ ุงู„ุชูˆุฒูŠุน ุงู„ุทุจูŠุนูŠ so now
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let's start what are the objectives for this
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distribution mainly for this chapter there are
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three features or three objectives one to compute
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probabilities from the normal distribution ุจุชุญุณุจ
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ุงุญุชู…ุงู„ู‡ุงุซุงู†ูŠู‹ุงุŒ ูƒูŠู ู†ุณุชุฎุฏู… ุงู„ู…ุดุงุฑูƒุฉ ุงู„ุทุจูŠุนูŠุฉ
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ู„ุชุญุณูŠู† ุชุทุจูŠู‚ุงุช ุญู‚ูŠู‚ูŠุฉ ุงู„ุญูŠุงุฉ ููŠ ุงู„ู…ุนุงู…ู„ุงุชุŒ ุฎุตูˆุตู‹ุง
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ููŠ ุงู„ุดุฑูƒุฉุŸ ูƒูŠู ูŠู…ูƒู†ู†ุง ุงุณุชุฎุฏุงู… ุงู„ู…ุดุงุฑูƒุฉ ุงู„ุทุจูŠุนูŠุฉ
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ู„ุชุญุณูŠู† ุงู„ู…ุดุงูƒู„ ููŠ ุงู„ุดุฑูƒุฉุŸ ูˆุฃุฎูŠุฑู‹ุงุŒ ุณู†ุฑู‰ ูƒูŠู ูŠู…ูƒู†ู†ุง
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ุงุณุชุฎุฏุงู… ุดูŠุก ูŠุณู…ู‰ ุจูˆุงุณุทุฉ ุงู„ูˆุงู‚ุนูŠุฉ ุงู„ุทุจูŠุนูŠุฉ ู„ุชุญุณูŠู†
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ู…ุง ุฅุฐุง ู…ุฌู…ูˆุนุฉ ู…ู† ุงู„ุจูŠุงู†ุงุช ู…ู‚ุงุฑู†ุฉ ุจุดูƒู„ ุทุจูŠุนูŠุŸ
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ุจุชุฐูƒุฑ ุงู†ู†ุง ุงุณุชุฎุฏู…ู†ุง ุงู„ู€ z-score ู„ุชุชุฃูƒุฏ
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ุงู† ุงูŠ ู‚ูŠู…ุฉ ูƒุงู†ุช
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ุชุนุชุจุฑ ุงูƒุชุฑูŠู… ุงูˆ ุงูˆุงุช ู„ูŠุฑ ุจุธุจุท ูŠุนู†ูŠ ููŠ ุงู„ู€ chapter
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3 ุญูƒูŠู†ุง ุนู† ุงู„ูƒู„ุงู… ุงุณุชุฎุฏู…ู†ุง ุงู„ z-score ู„ูˆ ูƒุงู† ุนู†ุฏู‰
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data point ูˆุงุญุฏุฉ ู‚ูŠู…ุฉ ูˆุงุญุฏุฉูƒูŠู ูŠู…ูƒู†ู†ุง ุฃู† ู†ู‚ูˆู„ ุฅู†
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ู‡ุฐุง ุงู„ูˆุถุน ุฃูˆ ู‡ุฐุง ู…ุฌู„ุฏ ุงู„ุจูŠุงู†ุงุช ู…ูˆุฌูˆุฏ ุฃูˆ ู„ูŠุณ ู…ูˆุฌูˆุฏุŸ
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ู„ูƒู† ููŠ ู‡ุฐู‡ ุงู„ู‚ุตุฉ ู…ุฑูƒุฒู†ุง ุนู„ู‰ ู…ุฌู„ุฏ ุงู„ุจูŠุงู†ุงุช ุงู„ุขู† ู‡ู„
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ู‡ุฐุง ู…ุฌู„ุฏ ุงู„ุจูŠุงู†ุงุช ู…ุฌู…ูˆุนุฉ ุฃูˆ ู„ูŠุณุŸ ู†ุจุญุซ ุนู† ุงู„ุจูŠุงู†ุงุช
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ุชู…ุงู…ุฉุŒ ู„ุฐู„ูƒ ู…ุฌู„ุฏ ุงู„ุจูŠุงู†ุงุชู‡ู„ ู‡ุฐุง ุงู„ุจูŠุงู†ุงุช ุทุจูŠุนูŠุฉ ุงูˆ
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ู„ูŠุณ ุทุจูŠุนูŠุฉุŸ ู‡ุฐุง ู‡ุฏูู†ุง ููŠ ู‡ุฐู‡ ุงู„ู‚ุตุฉ ุŒ ู„ุฐู„ูƒ ููŠ ู‚ุตุฉ T
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ู†ุฑูƒุฒ ูู‚ุท ุนู„ู‰ ูˆุงุญุฏุฉ ู‚ูŠู…ุฉ ู‡ู†ุง ู†ุฑูƒุฒ ุนู„ู‰ ุฌู…ูŠุน ู…ุฌู…ูˆุนุฉ
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ุงู„ุจูŠุงู†ุงุช ู‡ู„ ู‡ูŠ ุชู‚ุฑูŠุจุง ุทุจูŠุนูŠุฉ ุงูˆ ู„ูŠุณ ุทุจูŠุนูŠุฉุŸ ุณุฃุจุฏุฃ
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ู…ุน ุงู„ูˆุงุถุญุฉ ู„ุชู†ู…ูŠุฉ ุทุจูŠุนูŠุฉ ุซู… ุณู†ุฐู‡ุจ ุฅู„ู‰ ุงู„ู…ู‡ู…ุฉ
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ุงู„ุฃูˆู„ู‰
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ู„ู†ุจุฏุฃ ู…ุน continuous probability distributions
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ููŠ ุงู„ุจูŠุงู†ุงุช ู‡ู†ุงูƒ ุงุชุฌุงุฑุงุช ู…ุฎุชู„ูุฉ ุชุณู…ู‰ ูƒุชู†ูˆุณ ูƒุชู†ูˆุณ
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ูƒุชู†ูˆุณ ูƒุชู†ูˆุณ ู‡ูŠ ูƒุชู†ูˆุณ ุชุณุชุฎุฏู… ุงูŠ ู‚ูŠู…ุฉ ุชุณุชุฎุฏู… ุงูŠ ู‚ูŠู…ุฉ
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ุชุณุชุฎุฏู…
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ุงูŠ ู‚ูŠู…ุฉ ุชุณุชุฎุฏู…ุนู„ู‰ ุณุจูŠู„ ุงู„ู…ุซุงู„ุŒ ู„ูˆ ูƒู†ุง ู†ุชูƒู„ู… ุนู†
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ุงู„ูˆุถุน ูˆ ู„ูˆ ุฃู† ุงู„ูˆุถุน ูŠุชุฌุงูˆุฒ ู…ู† 60 ูƒูŠู„ูˆ ุฌุฑุงู… ุฅู„ู‰ 75
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ูƒูŠู„ูˆ ุฌุฑุงู…ุŒ ูู…ุน ูƒู… ู‚ูŠู…ุฉ ู…ูˆุฌูˆุฏุฉ ุจูŠู†ู‡ู…ุŸ
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how many values ุงู†ู‡ุง
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ู„ูˆ ุญูƒูŠุช ูˆุฒู†ู‡ุง ู…ู† 60 ู„ 75 ู…ู…ูƒู† ูˆุงุญุฏ ูŠูƒูˆู† ูˆุฒู†ู‡ 63.5
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ู…ู…ูƒู† ูˆุงุญุฏ ูŠูƒูˆู† ูˆุฒู†ู‡ 69.980 ูŠุนู†ูŠ ูƒุชูŠุฑ ูŠุนู†ูŠ ู…ุน ูƒุฏู‡
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there are infinite values
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in this case ุนุฏุฏ ู„ุงู†ู‡ูŠ ุจุงู„ู‚ูŠุงู…ู„ูˆ ุญูƒูŠุชู„ูƒ ุงู„
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cellphone ุงู„ู„ูŠ ู…ุนู†ุงู‡ ุงู„ุฌูˆุงู„ุงุช ุงู„ุณู…ูƒ ุชุจุนู‡ุง
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thickness ู…ูุชุฑุถ ู…ู† one centimeter to three
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centimeters how many values are between one and
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three infinite numbers suppose we are talking
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about temperature from
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suppose 36 up to 40it could be 36.1.2.3 and so on
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so there are infinite number of values so a
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continuous variable is a variable can take or can
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assume any value ุงูŠู‡ ู„ูˆ ุงูŠ ู‚ูŠู…ุฉ for example
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thickness of an item ุณู…ูƒ ู„ุดุบู„ ู…ุนูŠู†ุฉ time required
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to complete a task ุงู„ูˆู‚ุช ุงู„ู„ูŠ ู„ุงุฒู… ุฃูˆ ุงู„ูˆู‚ุช ุงู„ู„ูŠ
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ู„ุงุฒู… ุชุฎู„ุต ู…ู‡ู…ุฉ ุงูˆ ุงู†ุฌุงุฒ ู…ู‡ู…ุฉ ู…ู…ูƒู† ุงู„ุฒู…ู† could be
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ุจุชุนุฑู ููŠ ุงู„ runningู…ุณุงุจู‚ุงุช ุงู„ุฌุฑูŠ ู…ู…ูƒู† ูŠุฎู„ุต ุงู„ู…ุณุงูุฉ
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ููŠ 10 second ูŠุนู†ูŠ
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10.4 ู…ุน ูƒุฏู‡ ุฏู‡ ุนุจุงุฑุฉ ุนู† fraction ู…ู…ูƒู† 3.6 and so
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on so if we have a fraction it means we are
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talking about continuous
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height of a solution height in inches temperature
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of a solution these are values these values are
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infinite number I mean uncountable we cannot count
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these values ูˆุงุถุญ ูŠุนู†ูŠ ุงู„ variable ุงู„ู„ูŠ ุจูŠุงุฎุฏ ุฃูŠ
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ู‚ูŠู… ู†ุณู…ูŠู‡ continuous ู…ุชุตู„ ุงู„ type two ู…ุด ู‡ุชูƒู„ู…
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ุนู„ูŠู‡ ู‡ู†ุง ุงู„ู„ูŠ ู‡ูˆ discrete discrete
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variable ู…ุด ูŠุนู†ูŠ discretediscrete ู…ุนู†ุงู‡ ู…ู†ูุตู„ ุงูˆ
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ู…ุชู‚ุทุน ููŠ ุงู„ discrete ุจูŠุงุฎุฏ whole number whole
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number ูŠุนู†ูŠ ุนุฏุฏ ุตุญูŠุญ ู„ูˆ ุญูƒูŠุช there are sixty
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students in this class we cannot say there are
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sixty point five students in this class ุงุฐุง
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ุจูŠุงุฎุฏุงุด whole number another example suppose there
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arebetween zero to six accidents per
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week ู…ู† ุงู„ุตูุฑ ุงู„ุณุช ุญูˆู„ุช ููŠ ุงู„ุฃุณุจูˆุนูŠ ู…ูˆุฌูˆุฏ ุงูุชุฑุถ ููŠ
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intersection ู…ุนูŠู† suppose now you want to guess
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number between zero and six for
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example maybe four accidents maybe three accidents
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maybe five but you cannot say there are five point
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six accidentsper week ู…ุธุจูˆุท ุจู‚ุฏุฑุด ุงุญูƒูŠ ุฎู…ุณุฉ ูˆ ุณุชุฉ
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ุจุชุงุฎุฏ ุนุฏุฏ ุตุญูŠุญ now suppose we are talking about
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number of calls you received everyday ุนุฏุฏ
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ุงู„ู…ูƒุงู„ู…ุงุช ุงู„ู„ูŠ ุจุณุชู‚ุจู„ู‡ุง ููŠ ุงู„ูŠูˆู… ู…ุซู„ุง ranges from
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zero to twenty calls ุจุฑุถู‡ ู‡ูŠุงุฎุฏ whole number for
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instance suppose ten calls you cannot say nine
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point six calls
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ุจุดูƒู„ ุนุงู… ูŠูˆุฌุฏ ุงุชุฌุงุฑุงุช ุงุชุฌุงุฑุงุช ุงุชุฌุงุฑุงุช ุงุชุฌุงุฑุงุช
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ุงุชุฌุงุฑุงุช ุงุชุฌุงุฑุงุช ุงุชุฌุงุฑุงุช ุงุชุฌุงุฑุงุช ุงุชุฌุงุฑุงุช ุงุชุฌุงุฑุงุช
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ุงุชุฌุงุฑุงุช ุงุชุฌุงุฑุงุช ุงุชุฌุงุฑุงุช
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ุงุชุฌุงุฑุงุช
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ุงู„ู„ูŠ ุงู†ุง ู‡ูˆ ุจุญูƒูŠ ุฌู…ู„ุฉ ู…ู‡ู…ุฉ ููŠ ุงู„ุขุฎุฑ this can
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potentially take on any value depending only on
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the ability to precisely and accurately measure
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ุชุนุชู…ุฏ ุนู„ู‰ ุฌุฏุงุด ุนู†ุฏูƒ ุฏู‚ุฉ ุงู„ู‚ูŠุงุณ ู„ูˆ ูˆุงุญุฏ ุจุฌูŠุณ ุทูˆู„ูŠ
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ู…ูŠุฉ ู†ูุชุฑุถ ุจุฌูŠุณ ุตุญ ู‡ุญูƒูŠ ุทูˆู„ูŠ 160.75 cm it means
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height
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ู‡ูˆ ู…ุซุงู„ ู…ุณุชู…ุฑ ุฃูˆ ู…ุณุชู…ุฑุŸ ู…ุณุชู…ุฑ ูุงู„ู‚ูˆุฉ ู…ุณุชู…ุฑุฉุŒ ู…ุฎุตุตุฉ
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ู…ุฎุตุตุฉ ู…ุฎุตุตุฉ ู…ุฎุตุตุฉ ู…ุฎุตุตุฉ ู…ุฎุตุตุฉ ู…ุฎุตุตุฉ ู…ุฎุตุตุฉ ู…ุฎุตุตุฉ
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ู…ุฎุตุตุฉ ู…ุฎุตุตุฉ ู…ุฎุตุตุฉ ู…ุฎุตุตุฉ ู…ุฎุตุตุฉ ู…ุฎุตุตุฉ ู…ุฎุตุตุฉ ู…ุฎุตุตุฉ
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ู…ุฎุตุตุฉ ู…ุฎุตุตุฉ ู…ุฎุตุตุฉ ู…ุฎุตุตุฉ ู…ุฎุตุตุฉ ู…ุฎุตุตุฉ ู…ุฎุตุตุฉ ู…ุฎุตุตุฉ
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ู…ุฎุตุตุฉ ู…ุฎุตุตุฉ ู…ุฎุตุตุฉ ู…ุฎุตุตุฉ ู…ุฎุตุตุฉ ู…ุฎุตุตุฉ ู…ุฎุตุต
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ุจูŠู„ ุดูŠุจุฏ ุดูƒู„ ุงู„ุฌุฑุณ ู…ุชู…ุซู„
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ู…ูŠู† ู…ูˆุฏ ู…ูŠุฏูŠุงู† ุงูˆ ุงูƒุชุฑ ุงูƒุชุฑ ุงูƒุชุฑ ุงูƒุชุฑ ุงูƒุชุฑ ุงูƒุชุฑ
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ุงูƒุชุฑ ุงูƒุชุฑ ุงูƒุชุฑ ุงูƒุชุฑ ุงูƒุชุฑ ุงูƒุชุฑ ุงูƒุชุฑ ุงูƒุชุฑ ุงูƒุชุฑ ุงูƒุชุฑ
145
00:13:53,050 --> 00:13:54,970
ุงูƒุชุฑ ุงูƒุชุฑ ุงูƒุชุฑ ุงูƒุชุฑ ุงูƒุชุฑ ุงูƒุชุฑ ุงูƒุชุฑ ุงูƒุชุฑ ุงูƒุชุฑ ุงูƒุชุฑ
146
00:13:54,970 --> 00:13:56,430
ุงูƒุชุฑ ุงูƒุชุฑ ุงูƒุชุฑ ุงูƒุชุฑ ุงูƒุชุฑ ุงูƒุชุฑ ุงูƒุชุฑ ุงูƒุชุฑ ุงูƒุชุฑ ุงูƒุชุฑ
147
00:13:56,430 --> 00:13:58,230
ุงูƒุชุฑ ุงูƒุชุฑ ุงูƒุชุฑ ุงูƒุชุฑ ุงูƒุชุฑ ุงูƒุชุฑ ุงูƒุชุฑ ุงูƒุชุฑ ุงูƒุชุฑ ุงูƒุชุฑ
148
00:13:58,230 --> 00:14:10,470
ุงูƒุชุฑ ุงูƒุชุฑ ุงูƒุชุฑ ุงูƒุช
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and is a measure of central tendency ู…ู‚ูŠุงุณ ู…ู†
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ู…ู‚ูŠู‘ุณ ุงู„ู†ุฒุน ุงู„ู…ุฑูƒุฒูŠ ุงู„ู„ูŠ ุฃุฎุฏู†ุงู‡ ููŠ ุงู„ุฃูˆู„ ุฎุงู„ุต is
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00:14:21,300 --> 00:14:27,060
a normal distribution has two parameters ู…ูŠูˆ
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this is location is a measure of spread sigma
153
00:14:37,880 --> 00:14:44,920
ูˆุงู„ู…ุนู†ู‰ ู‡ูˆ ู…ุฌู…ูˆุนุฉ ู…ุฑูƒุฒูŠุฉ ุงูˆ ู…ุฌู…ูˆุนุฉ ู…ุฑูƒุฒูŠุฉ ุงูˆ
154
00:14:44,920 --> 00:14:47,480
ู…ุฑูƒุฒูŠุฉ ุงูˆ ู…ุฑูƒุฒูŠุฉ ุงูˆ ู…ุฑูƒุฒูŠุฉ ุงูˆ ู…ุฑูƒุฒูŠุฉ ุงูˆ ู…ุฑูƒุฒูŠุฉ ุงูˆ
155
00:14:47,480 --> 00:14:48,860
ู…ุฑูƒุฒูŠุฉ ุงูˆ ู…ุฑูƒุฒูŠุฉ ุงูˆ ู…ุฑูƒุฒูŠุฉ ุงูˆ ู…ุฑูƒุฒูŠุฉ ุงูˆ ู…ุฑูƒุฒูŠุฉ ุงูˆ
156
00:14:48,860 --> 00:14:50,020
ู…ุฑูƒุฒูŠุฉ ุงูˆ ู…ุฑูƒุฒูŠุฉ ุงูˆ ู…ุฑูƒุฒูŠุฉ ุงูˆ ู…ุฑูƒุฒูŠุฉ ุงูˆ ู…ุฑูƒุฒูŠุฉ ุงูˆ
157
00:14:50,020 --> 00:14:53,060
ู…ุฑูƒุฒูŠุฉ ุงูˆ ู…ุฑูƒุฒูŠุฉ ุงูˆ ู…ุฑูƒุฒูŠุฉ ุงูˆ ู…ุฑูƒุฒูŠุฉ ุงูˆ ู…ุฑูƒุฒูŠุฉ ุงูˆ
158
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ู…ุฑูƒุฒูŠุฉ ุงูˆ ู…ุฑูƒุฒูŠุฉ ุงูˆ ู…ุฑูƒุฒูŠุฉ ุงูˆ ู…ุฑูƒุฒูŠุฉ ุงูˆ ู…ุฑูƒุฒูŠุฉ ุงูˆ
159
00:14:53,360 --> 00:14:56,200
ู…ุฑูƒุฒูŠุฉ ุงูˆ ู…ุฑูƒุฒูŠุฉ ุงูˆ ู…ุฑูƒุฒูŠุฉ ุงูˆ ู…ุฑูƒุฒูŠุฉ ุงูˆ ู…ุฑูƒุฒูŠุฉ ุงูˆ
160
00:14:56,200 --> 00:15:05,870
ู…ุฑูƒุฒูŠุฉ ุงูˆ ู…ุฑูƒุฒูŠุฉ ุงูˆ ู…ุฑูƒุฒู‡ุฐู‡ ุงู„ู‚ูŠู… ู…ู…ูƒู† ุชุฃุฎุฐ ุฃูŠ ู‚ูŠู…
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ู…ู† ู†ู‚ู„ ุฅู„ู‰ ู†ู‚ู„ ุฅุถุงููŠ ุฅู„ู‰ ู†ู‚ู„ ุฅุถุงููŠ ู„ุฅูŠู‡ ุจูŠุงุฎุฏ ุฃูŠ
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ู‚ูŠู… ุณู„ุจ ู„ุนูŠุท plus ู„ุฃู†ู‡ ู…ู…ูƒู† ูŠูƒูˆู† ุนู†ุฏ ุงู„
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temperature ุงู„ temperature could be negative ู„ู…ุง
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ุงุชูƒู„ู… ุนู† ุงู„ sales is always positive if we are
165
00:15:27,230 --> 00:15:32,110
talking about unemployment unemployment
166
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rates
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00:15:36,240 --> 00:15:40,080
ุจุงุฒูˆุชูŠู ูˆุนุฏู„ุงุช ุงู„ุจุทุงู„ุฉ ุฏูŠ ู‡ูŠ ุงู„ู…ู†ู…ูˆุฌุฉ ุจู‚ู‰ ู…ุงููŠุด
168
00:15:40,080 --> 00:15:44,560
ู…ุทุงู„ุจ ู†ูŠุฌุงุชูŠู ู„ูƒู†
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ุงุฐุง ุจุญูƒูŠ ุนู„ู‰ ู…ุซู„ุง ุงู„ temperature could be negative
170
00:15:47,720 --> 00:15:50,800
ุชุบูŠูŠุฑุงุช
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ุงู„ุญุฑุงุฑุฉ ูŠุนู†ูŠ ู…ู…ูƒู† ุงู„ variable ูŠุงุฎุฏ plus or
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negative values ุงุฐุง random variable has an
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infinite theoretical range from minus infinity up
174
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to plus infinity now this is the meanุงู„ู‚ูŠู…ุฉ ููŠ
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00:16:05,400 --> 00:16:12,400
ุงู„ุฃูˆุณุท ูˆุงู„ุณูŠุฌู…ุง ูู‚ุท ุงู„ู…ุดุฑูˆุน ุญูˆู„ ุงู„ู…ุตุทู„ุญ ุงู„ุขู† ุฅุฐุง
176
00:16:12,400 --> 00:16:16,060
ูƒุงู† ู„ุฏูŠู†ุง ู‡ุฐุง ุงู„ุณูŠุฌู…ุง ุฑุจู…ุง ุงู„ุณูŠุฌู…ุง ู…ุซู„ุง ู‡ูˆ ูˆุงุญุฏ
177
00:16:16,060 --> 00:16:21,680
ุฑุจู…ุง ุงู„ู…ุตุทู„ุญ ู‡ูˆ 50 ุฃูˆ 70 ูŠุนุชู…ุฏ ุนู„ู‰ ุงู„ุจูŠุงู†ุงุช ุงู„ู„ูŠ
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00:16:21,680 --> 00:16:24,900
ู„ุฏูŠู†ุง
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ุงู„ูˆุถุน
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00:16:29,920 --> 00:16:33,720
ุนุงุฏู‰ ุงู„ูˆุถุน ุนุงุฏู‰ ุงู„ูˆุถุน ุนุงุฏู‰ ุงู„ูˆุถุน
181
00:16:35,250 --> 00:16:41,250
ููŠ ู‡ุฐู‡ ุงู„ุฏุฑุงุณุฉ ู„ู† ู†ุณุชุฎุฏู… ู‡ุฐู‡ ุงู„ู…ูŠุฒุฉ ู„ุชุญุฏูŠุซ ุงู„ู…ูŠุฒุฉ
182
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ูŠุนู†ูŠ ุงู„ู…ูŠุฒุฉ ุงู„ู„ูŠ ุนู†ุฏูƒ ู…ุด ู‡ู†ุณุชุฎุฏู…ู‡ุง ู…ุฌุฑุฏ ูˆุญุทู‡ุง ููŠ
183
00:16:44,970 --> 00:16:48,410
ุงู„ูƒุชุงุจ ุงู†ู‡ ุนุฑูู‡ุง ุฏูŠ ุนุจุงุฑุฉ ุนู† ู…ูŠุฒุฉ ู„ู†ูˆุฑู…ุงู„
184
00:16:48,410 --> 00:16:53,030
ุฏุณุชุฑุจูŠูˆุดู† ู„ุฐู„ูƒ ู†ู†ู‚ู„ ู‡ุฐุง ุงู„ุตูุญุฉ ูŠุนู†ูŠ ู…ุด ู‡ู†ุณุชุฎุฏู… ู‡ุฐุง
185
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ุงู„ุตูุญุฉ ุงู„ุตูุญุฉ
186
00:16:57,390 --> 00:16:58,530
ุงู„ู„ูŠ ูุงุชุช ู…ุด ู‡ู†ุงุฎุฏู‡ุง
187
00:17:01,790 --> 00:17:08,710
ุงู†ุธุฑูˆุง ุฅู„ู‰ ู‡ุฐู‡ ุงู„ุซู„ุงุซ ุฃุดูƒุงู„ ุฃูˆ ุฃุดูƒุงู„ A,B ูˆC ุงู†ุธุฑูˆุง
188
00:17:08,710 --> 00:17:14,150
ุญุฐุฑุงู‹ ู„ู€ A ูˆB ูˆุงู†ุธุฑูˆุง ุฅู„ู‰ ุงู„ู…ู‚ุงุฑู†ุฉ ุจูŠู† ุฃุดูƒุงู„ A ูˆY
189
00:17:14,150 --> 00:17:23,290
ูˆB ุงู†ุธุฑูˆุง ุฅู„ู‰ ุงุชู†ูŠู† ู‡ุฐูŠู† ูƒู„ุงู‡ู…ุง ู„ุฏูŠู‡ู… ู†ูุณ ุงู„ู€mean
190
00:17:26,820 --> 00:17:31,540
ู…ุธุจูˆุท ู†ูุณ ุงู„ mean ู„ูƒู† ู„ูˆ ุทู„ุนุช ุนู„ูŠ ุงู„ spread a less
191
00:17:31,540 --> 00:17:38,500
a is less so graph a ุงู„ู„ูŠ ู‡ูˆ a ุงู„ higher one is
192
00:17:38,500 --> 00:17:45,280
less spread than b ู„ูˆ ุทู„ุนุช ุนู„ูŠู‡ู… ู‡ุงูŠ a ู†ูุชุฑุถ ู‡ุงูŠ
193
00:17:45,280 --> 00:17:50,000
ุงู„ spread ุชุจุนู‡ ุจุณ b ู…ุงู„ู‡ ุฃูƒุจุฑ ุดูˆูŠุฉ ูุจุงู„ุชุงู„ูŠ ู„ุฐุง
194
00:17:50,000 --> 00:17:55,000
ุดูˆูŠุฉ ู…ุน ูƒุฏู‡ graph a and b have the same mean but
195
00:17:55,000 --> 00:17:59,320
different spreadุฅุฐุงู‹ a ูˆ b ู„ุฏูŠู‡ุง ู†ูุณ ุงู„ู…ุนู†ู‰ ูˆู„ูƒู†
196
00:17:59,320 --> 00:18:08,280
ู…ุนุงู†ุงุฉ ู…ุฎุชู„ูุฉ ุทุจ ู„ูˆ ุทู„ุนุช ุนู„ู‰ ุงู„ b ูˆ ุงู„ c ุงู„
197
00:18:08,280 --> 00:18:12,020
b ู‡ูŠ ุงู„ b ูˆ ู‡ูŠ ุงู„ c ุงู„ c ุงู„ู„ูŠ ุชุญุช ุฎุงู„ุต ุงู„ bottom
198
00:18:12,020 --> 00:18:21,960
one ุงู„ ู…ุนู†ู‰ ุงู„ b ู‡ุฐุง ุงู„ู‚ูŠู…ุฉ ุงู„ู…ุนู†ู‰ ุงู„ c ุจูŠุฎุชู„ู
199
00:18:21,960 --> 00:18:28,590
ูˆุงุถุญุชูŠู† ุฃุฒุงูŠ ุจุนุฏุŸุงู„ุฎุทุฉ a ูˆb ู„ุฏูŠู‡ุง ู…ุนูŠู†ุงุช ู…ุฎุชู„ูุฉ ู„ูˆ
200
00:18:28,590 --> 00:18:35,450
ุทู„ุนุช ุนู„ู‰ ุงู„ spread ุจุฑุถู‡ ุงู„ spread ู…ุฎุชู„ู ู„ุฃู† I ุจูŠ ูˆ
201
00:18:35,450 --> 00:18:38,890
I ุณูŠ ุจูŠ
202
00:18:38,890 --> 00:18:46,070
ูˆ ุณูŠ ู„ุฏูŠู‡ุง ู…ุนูŠู†ุงุช ู…ุฎุชู„ูุฉ ุจูŠ ูˆ ุณูŠ ุจูŠ ูˆ ุณูŠ ุจูŠ ูˆ ุณูŠ
203
00:18:46,070 --> 00:18:46,210
ุจูŠ ูˆ ุณูŠ ุจูŠ ูˆ ุณูŠ ุจูŠ ูˆ ุณูŠ ุจูŠ ูˆ ุณูŠ ุจูŠ ูˆ ุณูŠ ุจูŠ ูˆ ุณูŠ ุจูŠ
204
00:18:46,210 --> 00:18:46,230
ุจูŠ ูˆ ุณูŠ ุจูŠ ูˆ ุณูŠ ุจูŠ ูˆ ุณูŠ ุจูŠ ูˆ ุณูŠ ุจูŠ ูˆ ุณูŠ ุจูŠ ูˆ ุณูŠ ุจูŠ
205
00:18:46,230 --> 00:18:50,090
ูˆ ุณูŠ ุจูŠ ูˆ ุณูŠ ุจูŠ ูˆ ุณูŠ ุจูŠ ูˆ ุณูŠ ุจูŠ ูˆ ุณูŠ ุจูŠ ูˆ
206
00:18:54,370 --> 00:18:59,310
ุฑุจู…ุง ูŠูƒูˆู† ู„ุฏูŠู‡ู… ู†ูุณ ุงู„ู…ุนู†ู‰ ู„ูƒู†
207
00:18:59,310 --> 00:19:03,510
ู…ุนุงู†ุงุฉ ู…ุฎุชู„ูุฉ ุฃูˆ ู…ุนุงู†ุงุฉ ู…ุฎุชู„ูุฉ ูˆู…ุฎุชู„ูุฉ ุฃูŠุถู‹ุง
208
00:19:03,510 --> 00:19:08,310
ู…ุนุงู†ุงุฉ ู…ุฎุชู„ูุฉ ุŒ ู„ุฐู„ูƒ ู‡ุฐุง ูŠุนู†ูŠ ุฃู†ู†ุง ู†ุณุชุทูŠุน ุงู„ุญุตูˆู„
209
00:19:08,310 --> 00:19:12,150
ุนู„ู‰ ู…ุฌู…ูˆุนุงุช ุนุงุฏูŠุฉ ุนุงุฏูŠุฉ
210
00:19:12,150 --> 00:19:15,850
ู„ู…ุงุฐุง
211
00:19:15,850 --> 00:19:25,010
ุนุงุฏูŠุฉุŸ ู„ุฃู† ุงู„ู…ุฌู…ูˆุนุงุช ุงู„ุนุงุฏูŠุฉ ุชุนุชู…ุฏ ุนู„ู‰ ู…ูŠูˆูˆุงู„ู…ุนู†ู‰
212
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ูŠู…ูƒู† ุฃู† ูŠูƒูˆู† positive ุฃูˆ negative ูŠุนู†ูŠ ุชุฃุฎุฐ ู‚ูŠู…ุฉ
213
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ู…ุฎุชู„ูุฉ ุฃูŠ ู‚ูŠู…ุฉ ู…ุฎุชู„ูุฉ ู…ู† ู†ู‚ู„ ุฅู„ู‰ ู†ู‚ู„ ุฅู„ู‰ ู†ู‚ู„ ูˆู…ุน
214
00:19:33,510 --> 00:19:37,830
ุฐู„ูƒ ุงู„ูˆุถุน ุงู„ุนุงุฏู‰ ูŠุนุชู…ุฏ ุนู„ู‰ ุณูŠุฌู…ุง ูˆุณูŠุฌู…ุง ุฏุงุฆู…ุง
215
00:19:37,830 --> 00:19:43,090
positive ู…ู† ู†ู‚ู„ ุฅู„ู‰ ู†ู‚ู„ ูŠู…ูƒู† ุฃู† ูŠูƒูˆู† ู†ู‚ู„ ุฅู„ู‰ ู†ู‚ู„
216
00:19:43,090 --> 00:19:48,850
ูู‡ุฐุง ูŠุนู†ูŠ ุฃู†ู†ุง ู„ุฏูŠู†ุง ุนุฏุฏ ุนุงุฏู‰ ู…ู† ุงู„ูˆุถุน ุงู„ุนุงุฏู‰ ูŠุนู†ูŠ
217
00:19:48,850 --> 00:19:52,580
ููŠ ู‡ู†ุง ุนุฏุฏ ูƒุจูŠุฑ ู„ุฃู† ู‡ูŠ ุฃู…ูŠู† ุงู„ุชูˆุฒูŠุน ุงู„ุทุจูŠุนูŠู„ูˆ
218
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ุทุงู„ู…ุง ุงู„ู€ mu ุจุชุงุฎุฏ ุฃูŠ ู‚ูŠู…ุฉ ูˆ ุงู„ sigma ุจุชุงุฎุฏ
219
00:19:56,740 --> 00:20:00,440
positive ู…ุน ูƒุฏู‡ ู„ูˆ ุงู†ุง ุจุฏูŠ ุงุนู…ู„ combination ู„ู‡ู…
220
00:20:00,440 --> 00:20:05,280
ู…ู…ูƒู† ุงุญูƒูŠ normal with mean 50 and sigma 1 ู‡ุฐุง ู‡ูˆ
221
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ู…ุซุงู„ ู…ู…ูƒู† ูˆุงุญุฏ ุชุงู†ูŠ ูŠุญูƒูŠ ุงู„ mean the same the same
222
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mean but different sigma, sigma is twoุฃูˆ ู…ู…ูƒู† ูŠูƒูˆู†
223
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ู…ุฎุชู„ู ูŠุนู†ูŠ ู…ูŠูˆ ูŠู‚ู„ ุณุชุฉ ูˆุณูŠุฌู…ุง ูŠู‚ู„ ุฃุฑุจุนุฉ ูู‡ุฐุง A
224
00:20:22,420 --> 00:20:27,920
ู…ุซู„ุง B ูˆC ูู‡ูˆ ูู‚ุท ุซู„ุงุซุฉ ู…ุซุงู„ A ูˆB ุงุฐุง ุชู†ุธุฑ ู‡ู†ุง A
225
00:20:27,920 --> 00:20:35,680
ูˆB ู„ุฏูŠู‡ู… ู†ูุณ ุงู„ู…ูŠุงู†ุจุนุฏ ุฐู„ูƒ ุจุฑู†ุงู…ุฌ B ูˆC ุจุฑู†ุงู…ุฌ B ูˆC
226
00:20:35,680 --> 00:20:39,240
ุจุฑู†ุงู…ุฌ B ูˆC ุจุฑู†ุงู…ุฌ B ูˆC ุจุฑู†ุงู…ุฌ B ูˆC ุจุฑู†ุงู…ุฌ B ูˆC
227
00:20:39,240 --> 00:20:43,600
ุจุฑู†ุงู…ุฌ B ูˆC ุจุฑู†ุงู…ุฌ B ูˆC ุจุฑู†ุงู…ุฌ B ูˆC ุจุฑู†ุงู…ุฌ B ูˆC
228
00:20:43,600 --> 00:20:50,120
ุจุฑู†ุงู…ุฌ B ูˆC ุจุฑู†ุงู…ุฌ B ูˆC ุจุฑู†ุงู…ุฌ B ูˆC ุจุฑู†ุงู…ุฌ B ูˆC
229
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ุจุฑู†ุงู…ุฌ B ูˆC ุจุฑู†ุงู…ุฌ
230
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ุจุณูŠุทุฉ ุนู„ู‰ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ
231
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ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ
232
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ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ
233
00:21:00,460 --> 00:21:03,960
ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ
234
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ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ
235
00:21:07,200 --> 00:21:08,500
ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ
236
00:21:08,500 --> 00:21:15,580
ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ ุนู…ู„ูŠุฉ
237
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ุนู…ู„
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ุฅุฐุง ูƒุฏู‡ ุงู„ standard .. ุงู„ normal ุดูˆูŠุฉ ุตุนุจ
239
00:21:25,110 --> 00:21:31,270
ุจุงู„ู†ุณุจุงู„ู†ุง ู„ุฃู†ู‡ ุจูŠุงุฎุฏ ู…ูŠูˆุฒ ูˆ ุณูŠุฌู…ุงุฒ ู…ุฎุชู„ูุฉ ุจุงู„ู†ุญุงู„
240
00:21:31,270 --> 00:21:35,150
ุฃุณู‡ู„ ููŠ ุงู„ุชุนุงู…ู„ ู„ุณู‡ ุงู„ู„ูŠ ุงุญู†ุง ู†ุญูƒูŠ ุนู„ูŠู‡ ุงุณู…ู‡
241
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standardized normal ุฅูŠุด ูŠุนู†ูŠ standardized ู…ุนูŠุงุฑูŠ
242
00:21:41,370 --> 00:21:50,090
ู†ุชูƒู„ู… ุนู„ู‰ standardized normal
243
00:21:51,680 --> 00:22:00,060
ู‡ูˆ ุงู„ุชูˆุฒูŠุน ุงู„ุทุจูŠุนูŠ ุงู„ู…ุนูŠู† Now let's look at the
244
00:22:00,060 --> 00:22:04,220
difference between Normal distribution and this
245
00:22:04,220 --> 00:22:07,960
one Normal The one we just described Normal
246
00:22:07,960 --> 00:22:11,940
distribution Normal has different mean and sigma
247
00:22:11,940 --> 00:22:15,000
But
248
00:22:15,000 --> 00:22:20,180
for standardized normalany normal distribution ู‡ูˆ
249
00:22:20,180 --> 00:22:27,100
ุนุจุงุฑุฉ ุนู† ุชูˆุฒูŠุน ุทุจูŠุนูŠ with any mean and standard
250
00:22:27,100 --> 00:22:31,280
deviation combination can be transformed into the
251
00:22:31,280 --> 00:22:34,900
standardized normal ูŠุนู†ูŠ ุงู†ุง ุจุญูƒูŠ ุงูŠ ุชูˆุฒูŠุน normal
252
00:22:34,900 --> 00:22:37,500
ู…ู…ูƒู† ุงุญูˆู„ู‡ ู„ู…ูŠู†ุŸ ู„ู€ standardized ูˆู‡ุฐุง ุงู„ู„ูŠ ุงู†ุง
253
00:22:37,500 --> 00:22:42,720
ุนุงูŠุฒู‡ ุงุฐุง ุงู„ุงู† ุจู†ุนู…ู„ convert ู…ู† normal
254
00:22:42,720 --> 00:22:48,100
distribution ู„ standardized normalู„ูˆ ุชู‚ูˆู… ุจู…ุซุงู„ุงุช
255
00:22:48,100 --> 00:22:50,120
ุนุงุฏูŠุฉ ุจู…ุซุงู„ุงุช ุนุงุฏูŠุฉ ุจู…ุซุงู„ุงุช ุนุงุฏูŠุฉ ุจู…ุซุงู„ุงุช ุนุงุฏูŠุฉ
256
00:22:50,120 --> 00:22:51,240
ุจู…ุซุงู„ุงุช ุนุงุฏูŠุฉ ุจู…ุซุงู„ุงุช ุนุงุฏูŠุฉ ุจู…ุซุงู„ุงุช ุนุงุฏูŠุฉ ุจู…ุซุงู„ุงุช
257
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ุนุงุฏูŠุฉ ุจู…ุซุงู„ุงุช ุนุงุฏูŠุฉ ุจู…ุซุงู„ุงุช ุนุงุฏูŠุฉ ุจู…ุซุงู„ุงุช ุนุงุฏูŠุฉ
258
00:22:54,860 --> 00:22:55,900
ุจู…ุซุงู„ุงุช ุนุงุฏูŠุฉ ุจู…ุซุงู„ุงุช ุนุงุฏูŠุฉ ุจู…ุซุงู„ุงุช ุนุงุฏูŠุฉ ุจู…ุซุงู„ุงุช
259
00:22:55,900 --> 00:22:57,380
ุนุงุฏูŠุฉ ุจู…ุซุงู„ุงุช ุนุงุฏูŠุฉ ุจู…ุซุงู„ุงุช ุนุงุฏูŠุฉ ุจู…ุซุงู„ุงุช ุนุงุฏูŠุฉ
260
00:22:57,380 --> 00:23:02,800
ุจู…ุซุงู„ุงุช ุนุงุฏูŠุฉ ุจู…ุซุงู„ุงุช ุนุงุฏูŠุฉ ุจู…ุซุงู„ุงุช ุนุงุฏูŠุฉ ุจู…ุซุงู„ุงุช
261
00:23:02,800 --> 00:23:03,820
ุนุงุฏูŠุฉ ุจู…ุซุงู„ุงุช ุนุงุฏูŠุฉ ุจู…ุซุงู„ุงุช ุนุงุฏูŠุฉ ุจู…ุซุงู„ุงุช ุนุงุฏูŠุฉ
262
00:23:03,820 --> 00:23:16,280
ุจู…ุซุงู„ุงุช ุนุงุฏูŠุฉ ุจู…ุซุงู„ุงุช ุนุงุฏูŠุฉ ุจู…ุซ
263
00:23:19,070 --> 00:23:24,310
ุจุชุญูˆู„ ู…ู† ุชูˆุฒูŠุน ุทุจูŠุนูŠ ู„ู…ุนูŠุงุฑูŠ ุทูŠุจ ู…ุด ุงู„ู…ูŠุฒุฉ ุชุงุจุนุฉ
264
00:23:24,310 --> 00:23:26,710
ุงู„ standardized ุงู„ standardized normal
265
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distributions ู‡ูŠ has mean of zero and standard
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00:23:30,790 --> 00:23:35,730
deviation of one ู‡ุฐุง ู„ุฌุฏูŠุฏ ุงู„ mean ุชุงุจุนู‡ zero ูˆ ุงู„
267
00:23:35,730 --> 00:23:41,990
sigma is one ุทูŠุจ ุงู„ normal ูƒุงู† ู…ุงู„ู‡ ุงู„ mean ุชุงุจุนู‡
268
00:23:41,990 --> 00:23:44,790
ุฃูŠ value ู…ู† ุณู„ุจ infinity ู„ plus infinity ูˆ ุงู„
269
00:23:44,790 --> 00:23:47,490
sigma ู…ู† zero ู„ infinity ู…ุน ูƒุฏู‡ ููŠ ู†ู‡ุงูŠุฉ ุนู†ุฏูŠ
270
00:23:47,490 --> 00:23:51,530
infiniteุจุณ ุฏู‡ ุจูŠุงุฎุฏ ูŠุงุด just one value, zero and
271
00:23:51,530 --> 00:23:59,830
one ุจุณ
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00:23:59,830 --> 00:24:02,790
ุฏู‡ ุจูŠุงุฎุฏ ูŠุงุด just one value, zero and one ุจุณ ุฏู‡
273
00:24:02,790 --> 00:24:04,170
ุจูŠุงุฎุฏ ูŠุงุด just one value, zero and one ุจุณ ุฏู‡ ุจูŠุงุฎุฏ
274
00:24:04,170 --> 00:24:04,210
one value, zero and one ุจุณ ุฏู‡ ุจูŠุงุฎุฏ ูŠุงุด just one
275
00:24:04,210 --> 00:24:04,750
value, zero and one ุจุณ ุฏู‡ ุจูŠุงุฎุฏ ูŠุงุด just one
276
00:24:04,750 --> 00:24:06,650
value, zero and one ุจุณ ุฏู‡ ุจูŠุงุฎุฏ ูŠุงุด just one
277
00:24:06,650 --> 00:24:12,390
value, zero and one ุจุณ ุฏู‡ ุจูŠุงุฎุฏ ูŠุงุด
278
00:24:12,390 --> 00:24:15,530
just one value, zero and one ุจุณ ุฏู‡ ุจูŠุงุฎุฏ ูŠุงุด just
279
00:24:15,530 --> 00:24:15,730
one value, zero and one ุจุณ ุฏู‡ ุจูŠุงุฎุฏ ูŠุงุด just one
280
00:24:15,730 --> 00:24:19,790
value, zero and one ุจุณ ุฏูˆุณุจุจ ุงู„ุชุญูˆูŠู„ ุฃู† ุงู„ู…ุนูŠุงุฑ
281
00:24:19,790 --> 00:24:27,290
ู…ุงู„ู‡ ุฃุณู„ ู„ุฃู†ู‡ ู‚ูŠู…ู‡ ู…ุญุฏุฏุฉ ู…ูŠู† ุตูุฑ ูˆ ุณูŠุฌู…ุง ูˆุงุญุฏ ู„ูƒู†
282
00:24:27,290 --> 00:24:31,450
ุงู„ normal ุงู„ุนุงุฏูŠ ู…ุงู„ู‡ infinite number of means ู…ู†
283
00:24:31,450 --> 00:24:34,530
ุณุงู„ุจ infinite ู„ plus infinity ูˆ ุงู„ sigma ู…ู† zero ู„
284
00:24:34,530 --> 00:24:37,890
infinity ุงุญู†ุง ุชุนุจู†ุง ู…ู† ุชู„ุงุชุฉ ุจุณ ูุงู†ุชุจู‡ูŠูƒ ู„ูˆ ูƒุงู†
285
00:24:37,890 --> 00:24:41,590
ุงู†ุฏูŠุจุงู†ุฏุฑ ุชู„ุงุชุฉ ุชู„ุงุชู…ูŠุฉ ูˆุงุญุฏ ุงู„ุนู…ู„ูŠุฉ ุตุนุจุฉ ุนุดุงู† ูƒุฏู‡
286
00:24:41,590 --> 00:24:46,690
ู‡ู†ุญูˆู„ ู…ู† normal ู„ standardized how can we
287
00:24:46,690 --> 00:24:53,720
translateู…ู† ุทุจูŠุนูŠ ุฅู„ู‰ ุทุจูŠุนูŠ ูƒู…ุง ุฐูƒุฑู†ุง ููŠ ุงู„ุญู„ู‚ุฉ
288
00:24:53,720 --> 00:25:04,080
ุงู„ุซุงู„ุซุฉ ู†ุณุชุทูŠุน ุงุณุชุฎุฏุงู… ู…ู‚ุงุฑู†ุฉ ุฒูŠ ุฒูŠ ู…ู‚ุงุฑู†ุฉ ุฒูŠ
289
00:25:04,080 --> 00:25:06,060
ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ
290
00:25:06,060 --> 00:25:07,020
ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ
291
00:25:07,020 --> 00:25:07,180
ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ
292
00:25:07,180 --> 00:25:07,440
ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ
293
00:25:07,440 --> 00:25:10,180
ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ
294
00:25:10,180 --> 00:25:13,740
ุฒูŠ ุฒูŠ
295
00:25:13,740 --> 00:25:22,680
ุฒูŠุฒูŠ ูŠุนู†ูŠ ุงุชุฌุงุฑุฉ ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ
296
00:25:22,680 --> 00:25:23,460
ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ
297
00:25:23,460 --> 00:25:23,740
ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ
298
00:25:23,740 --> 00:25:24,880
ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ
299
00:25:24,880 --> 00:25:28,900
ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ
300
00:25:28,900 --> 00:25:32,200
ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ
301
00:25:32,200 --> 00:25:39,960
ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…ุฉ ุนุงู…
302
00:25:41,280 --> 00:25:48,520
ุงู„ุฒูŠ ุฏูŠุณุชุฑุจูŠูˆุดู† ุฏุงุฆู…ู‹ุง ู„ุฏูŠู‡
303
00:25:48,520 --> 00:25:54,760
ู…ูŠู† ุชุจุนู‡ุง 0 ูˆู…ูŠูˆุฒูŠุฑูˆ ู…ูŠูˆุฒูŠุฑูˆ ูˆู…ูŠูˆุฒูŠุฑูˆ ู…ูŠูˆุฒูŠุฑูˆ
304
00:25:54,760 --> 00:26:03,560
ูˆู…ูŠูˆุฒูŠุฑูˆ ู…ูŠูˆุฒูŠุฑูˆ ู…ูŠูˆุฒูŠุฑูˆ ู…ูŠูˆุฒูŠุฑูˆ ู…ูŠูˆุฒูŠุฑูˆ
305
00:26:03,560 --> 00:26:09,900
ู…ูŠูˆุฒูŠุฑูˆ ู…ูŠูˆุฒูŠุฑูˆ ู…ูŠูˆุฒูŠุฑูˆ ู…ูŠูˆุฒูŠุฑูˆ ู…ูŠูˆุฒูŠุฑูˆ ู…ูŠูˆุฒูŠุฑูˆ
306
00:26:09,900 --> 00:26:10,000
ู…ูŠูˆุฒูŠุฑูˆ ู…ูŠูˆุฒูŠุฑูˆ ู…ูŠูˆุฒูŠุฑูˆ ู…ูŠูˆุฒูŠุฑูˆ ู…ูŠูˆุฒูŠุฑูˆ ู…ูŠูˆุฒูŠุฑูˆ
307
00:26:10,000 --> 00:26:11,200
ู…ูŠูˆุฒูŠุฑูˆ ู…ูŠูˆุฒูŠุฑูˆ ู…ูŠูˆุฒูŠุฑูˆ ู…ูŠูˆุฒูŠุฑูˆ ู…ูŠูˆุฒูŠุฑูˆ ู…ูŠุฃูŠ ุณุคุงู„
308
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ู…ูˆุฌูˆุฏุŸ
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ู…ุฑุฉ ุฃุฎุฑู‰ ู‡ุฐู‡ ู‡ูŠ ู…ูู‡ูˆู…ุฉ ุงู„ู‡ุฒูŠู…ุฉ ู„ู€ Standardized
310
00:26:21,000 --> 00:26:26,880
Normal ุงูŠุถุง ุชู†ุณู‰ ู‡ุฐู‡ ุงู„ุตูุญุฉ ู‡ุฐุง ู…ุด ุนุงูŠุฒูŠู†ู‡ ุงุฐุง ู‡ูˆ
311
00:26:26,880 --> 00:26:31,300
ูˆุงุถุญ ุงู„ู„ูŠ ุนู†ุฏูŠ two slides ุนู…ู„ู‡ู… skip ุงู„ู„ูŠ ุจุชุงุนุฉ ุงู„
312
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normal ุงู„ู„ูŠ ุจุชุงุนุฉ ุงู„ standardized
313
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Standardized Normal Distribution Known as Z ูŠุนู†ูŠ
314
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ุจุฏู„ ู…ุง ุงุญูƒูŠ Standardized Normal Distribution ู‡ู†ุงุฎุฏ
315
00:26:50,140 --> 00:26:55,840
ุงุฎุชุตุงุฑูŠ ู„ู‡ุง ุจุณ Z Distribution ูุงู„ Z ููŠ ุงู„
316
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statistics ู…ุนู†ุงู‡ุง Standardized
317
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NormalูŠุนู†ูŠ ุจุฏู„ ู…ุง ุงุญูƒูŠ standardized normal ู‡ุญูƒูŠ z
318
00:27:05,010 --> 00:27:11,110
ุงุฐุง and always we just use z instead of
319
00:27:11,110 --> 00:27:15,990
standardized normal now this z has mean of zero
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00:27:15,990 --> 00:27:19,950
and standard deviation of one this is the mean and
321
00:27:19,950 --> 00:27:25,210
this is sigma, sigma is one now value for z we
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00:27:25,210 --> 00:27:28,410
have negative and plus values so we have negative
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values and positive valuesValues above the mean
324
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have positive z ุงู„ู‚ูŠู… ุงู„ุฃุนู„ู‰ ู…ู† ุงู„ู€mean in this
325
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direction Zero and above we have positive z
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Negative z it means to the left side of zero So
327
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values above the mean have positive z values while
328
00:27:52,780 --> 00:27:58,990
values below the mean have negative z valuesุจุชูƒูˆู†
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ู…ูˆุฌุฉ ุจุงู„ z score ุชุจุนู‡ุง ุทุจูŠุนูŠ ู…ุดุงูƒู„ ู„ู…ุง ูƒุงู†ุช ุงู„ x
330
00:28:03,150 --> 00:28:06,750
ุฃูƒุจุฑ ู…ู† ุงู„ mean ุชุฐูƒุฑ ุงู„ x is greater than the mean
331
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then z is positive ูˆ ุงู„ุนูƒุณ ู„ูˆ ูƒุงู†ุช x ุฃู‚ู„ ู…ู† ุงู„
332
00:28:10,810 --> 00:28:16,110
mean ู†ูŠุฌุงุชูŠู I think we discussed this issue in
333
00:28:16,110 --> 00:28:22,410
chapter 3 when we said z is positive if x is
334
00:28:22,410 --> 00:28:26,450
greater than the meanู„ุฐู„ูƒ ุฅุฐุง ู‚ูŠู…ุฉ ุฃูƒุชุฑ ู…ู† ุงู„ู…ุนู†ู‰ุŒ
335
00:28:26,450 --> 00:28:31,270
ูู€ z ู‡ูˆ ุงูƒุชุฑ ู…ู† ุงู„ู…ุนู†ู‰ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ
336
00:28:31,270 --> 00:28:33,050
ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ ุฒูŠ
337
00:28:56,960 --> 00:29:12,060
ุณุฃุนุทูŠ ุจุนุถ ุงู„ุฃู…ุซู„ุฉ ู‡ู†ุง ุฅุฐุง
338
00:29:12,060 --> 00:29:21,960
X ูƒุงู† ุนุงู…ู‹ุง ู…ุฌุชู…ุนู‹ุง ููŠ ู‡ุฐุง ุงู„ู…ุซุงู„ X ู„ุฏูŠู‡ ุนุงู…ุฉ ู…ุน
339
00:29:27,330 --> 00:29:36,230
ู…ุนู†ู‰ 100 ุฏูˆู„ุงุฑ ุนู…ู„ูŠ ุงุจู†ูŠุฉ ูˆู…ุนู†ู‰ 50 ุฏูˆู„ุงุฑ ุนู…ู„ูŠ
340
00:29:36,230 --> 00:29:37,770
ุงุจู†ูŠุฉ ูˆู…ุนู†ู‰ 50 ุฏูˆู„ุงุฑ ุนู…ู„ูŠ ุงุจู†ูŠุฉ ูˆู…ุนู†ู‰ 50 ุฏูˆู„ุงุฑ
341
00:29:37,770 --> 00:29:38,450
ุนู…ู„ูŠ ุงุจู†ูŠุฉ ูˆู…ุนู†ู‰ 50 ุฏูˆู„ุงุฑ ุนู…ู„ูŠ ุงุจู†ูŠุฉ ูˆู…ุนู†ู‰ 50
342
00:29:38,450 --> 00:29:40,730
ุฏูˆู„ุงุฑ ุนู…ู„ูŠ ุงุจู†ูŠุฉ ูˆู…ุนู†ู‰ 50 ุฏูˆู„ุงุฑ ุนู…ู„ูŠ ุงุจู†ูŠุฉ ูˆู…ุนู†ู‰
343
00:29:40,730 --> 00:29:40,890
ูˆู…ุนู†ู‰ 50 ุฏูˆู„ุงุฑ ุนู…ู„ูŠ ุงุจู†ูŠุฉ ูˆู…ุนู†ู‰ 50 ุฏูˆู„ุงุฑ ุนู…ู„ูŠ
344
00:29:40,890 --> 00:29:42,170
ุงุจู†ูŠุฉ ูˆู…ุนู†ู‰ 50 ุฏูˆู„ุงุฑ ุนู…ู„ูŠ ุงุจู†ูŠุฉ ูˆู…ุนู†ู‰ 50 ุฏูˆู„ุงุฑ
345
00:29:42,170 --> 00:29:46,070
ุนู…ู„ูŠ ุงุจู†ูŠุฉ ูˆู…ุนู†ู‰
346
00:29:46,070 --> 00:29:49,370
50
347
00:29:49,370 --> 00:29:59,660
ุฏูˆู„ุงุฑ ุนู…ู„ูŠ ุงุจู†ูŠุฉ ูˆู…ุนู†ู‰ 50 ุฏูˆู„ุงุฑ ุนูˆุงู„ุณุนุฑ ู„ุฏูŠู‡
348
00:29:59,660 --> 00:30:03,680
ุงุชุฌุงุฑุฉ ุนุงุฏูŠุฉ ุนู„ู‰ ุณุจูŠู„ ุงู„ู…ุซุงู„ 100 ุฏูˆู„ุงุฑ ูˆุณูŠุฌู…ุง 50
349
00:30:03,680 --> 00:30:12,280
ุฏูˆู„ุงุฑ ุงุฐุง ุณุนุฑูƒ 200 ุฏูˆู„ุงุฑ ู…ุงุฐุง
350
00:30:12,280 --> 00:30:20,020
ูŠุนู†ูŠ ุฒูŠ ุณุฌู„ูƒ ููŠ ู‡ุฐู‡ ุงู„ุญุงู„ุฉ ุฏุนูˆู†ุง ุฃูˆู„ุง ู†ุฌุฑุญ ุฒูŠ
351
00:30:20,020 --> 00:30:24,080
ูŠุนู†ูŠ ุงูƒุณ ู…ูŠู† ุนุจุฑ ุณูŠุฌู…ุง
352
00:30:27,760 --> 00:30:40,080
X ู‡ูˆ 200 ู…ูŠู† ู‡ูˆ 1 ุณูŠุฌู…ุน ู‡ูˆ 50 ู‡ุฐุง ูŠุนู†ูŠ 2 ุงู„ุขู†
353
00:30:40,080 --> 00:30:47,980
ู‚ูŠู…ุฉ 2 ู…ุงุฐุง ูŠุนู†ูŠ ู‚ูŠู…ุฉ 2ุŸ ูŠุนู†ูŠ X ู‡ูˆ 200 ุงู†ู‡ 2
354
00:30:47,980 --> 00:30:52,220
ู…ู‚ุงุฑู†ุฉ ุนุงุฏูŠุฉ ุฃุนู„ู‰ ู…ูŠู† ูƒูˆูŠุณุŒ ุงุฐุง ู‡ุฐุง ูŠู‚ูˆู„ ุฃู† ูƒูุฉ
355
00:30:52,220 --> 00:30:55,560
200ุงู†ุชู‚ู„ ุงู„ุงู†ุชู‚ุงู„ ุงู„ุงู†ุชู‚ุงู„ ุงู„ุงู†ุชู‚ุงู„ ุงู„ุงู†ุชู‚ุงู„
356
00:30:55,560 --> 00:30:58,260
ุงู„ุงู†ุชู‚ุงู„ ุงู„ุงู†ุชู‚ุงู„ ุงู„ุงู†ุชู‚ุงู„ ุงู„ุงู†ุชู‚ุงู„ ุงู„ุงู†ุชู‚ุงู„
357
00:30:58,260 --> 00:31:02,980
ุงู„ุงู†ุชู‚ุงู„ ุงู„ุงู†ุชู‚ุงู„ ุงู„ุงู†ุชู‚ุงู„ ุงู„ุงู†ุชู‚ุงู„ ุงู„ุงู†ุชู‚ุงู„
358
00:31:02,980 --> 00:31:03,380
ุงู„ุงู†ุชู‚ุงู„ ุงู„ุงู†ุชู‚ุงู„ ุงู„ุงู†ุชู‚ุงู„ ุงู„ุงู†ุชู‚ุงู„ ุงู„ุงู†ุชู‚ุงู„
359
00:31:03,380 --> 00:31:03,400
ุงู„ุงู†ุชู‚ุงู„ ุงู„ุงู†ุชู‚ุงู„ ุงู„ุงู†ุชู‚ุงู„ ุงู„ุงู†ุชู‚ุงู„ ุงู„ุงู†ุชู‚ุงู„
360
00:31:03,400 --> 00:31:03,480
ุงู„ุงู†ุชู‚ุงู„ ุงู„ุงู†ุชู‚ุงู„ ุงู„ุงู†ุชู‚ุงู„ ุงู„ุงู†ุชู‚ุงู„ ุงู„ุงู†ุชู‚ุงู„
361
00:31:03,480 --> 00:31:06,040
ุงู„ุงู†ุชู‚ุงู„ ุงู„ุงู†ุชู‚ุงู„ ุงู„ุงู†ุชู‚ุงู„ ุงู„ุงู†ุชู‚ุงู„ ุงู„ุงู†ุชู‚ุงู„
362
00:31:06,040 --> 00:31:09,080
ุงู„ุงู†ุชู‚ุงู„ ุงู„ุงู†ุชู‚ุงู„ ุงู„ุงู†ุชู‚ุงู„ ุงู„ุงู†ุชู‚ุงู„ ุงู„ุงู†ุชู‚ุงู„
363
00:31:09,080 --> 00:31:10,920
ุงู„ุงู†ุชู‚ุงู„ ุงู„ุงู†ุชู‚ุงู„ ุงู„ุงู†ุชู‚ุงู„ ุงู„ุงู†ุชู‚ุงู„ ุงู„ุงู†ุชู‚ุงู„
364
00:31:22,660 --> 00:31:28,580
your wage and the mean is twice sigma ุงู†ุง ุจุฒูŠุฏู‡ุง
365
00:31:28,580 --> 00:31:34,400
ุนู† ุงู„ู…ุชูˆุณุท ุจุงู„ู…ูŠุฉ ุงู„ู…ูŠุฉ ู…ุด ุนู„ุงู‚ุฉ ุจุงู„ุฎู…ุณูŠู† ุถุนูู‡ุง
366
00:31:34,400 --> 00:31:38,900
ุนุดุงู† ูƒุฏู‡ ุทู„ุนุช ุงุชู†ูŠู† ู…ุน ูƒุฏู‡ this is wage of two
367
00:31:38,900 --> 00:31:42,020
hundred is two standard deviation above that one
368
00:31:42,020 --> 00:31:49,660
more example for z negative for instance suppose
369
00:31:49,660 --> 00:31:59,800
your wage150 ุฏูˆู„ุงุฑ ู…ุงุฒุงู„ ุฌูŠุฏ ู„ุฃู†
370
00:31:59,800 --> 00:32:05,640
ู‡ุฐุง ุงู„ูˆุงุฌู‡ุฉ ุฃูƒุจุฑ ู…ู† 100 ุงู„ุขู† ู„ูƒูŠ ุฃู‚ูˆู… ุจู…ุนุฑูุฉ ุฒูŠ
371
00:32:05,640 --> 00:32:15,040
150 ู…ุงู†ูˆุณ 100 ู…ู‚ุงู„ 50 ู‡ูˆ ูˆุงุญุฏ ูู…ุนุฑูุฉ ุฒูŠ ูˆุงุญุฏ ูŠุนู†ูŠ
372
00:32:15,040 --> 00:32:21,470
ุฃู† ูˆุงุฌู‡ุชูƒ ูˆุงุญุฏุฉ ู…ู‚ุงุฑู†ุฉ ุฃุนู„ู‰ ุงู„ู…ู‚ุงูˆู…ุฉู„ุฃู† ุงู„ูุฑู‚
373
00:32:21,470 --> 00:32:27,890
ุฎู…ุณูŠู† ู…ุด ู‡ูŠูƒ ูˆ ุงู„ุฎู…ุณูŠู† ู‡ูŠ ุงู„ sigma suppose your
374
00:32:27,890 --> 00:32:31,770
wage is fifty now
375
00:32:31,770 --> 00:32:37,370
this one in this case negative
376
00:32:37,370 --> 00:32:46,710
one negative means your wage of ุฎู…ุณูŠู† ุฃู‚ู„ ู…ู† ุงู„
377
00:32:46,710 --> 00:32:55,080
mean of one standard deviationู…ุงุฐุง ุนู† X ู‡ูˆ 100ุŸ
378
00:32:55,080 --> 00:33:00,540
Z ูŠู‚ู„ 0ุŒ ูู‡ุฐุง ูŠุนู†ูŠ ุฃู† ู‚ูŠู…ุชูƒ ู‡ูŠ ู†ูุณู‡ุง ู…ุง ูŠุนู†ูŠ
379
00:33:00,540 --> 00:33:01,180
ุงู„ู…ุฌุชู…ุน.
380
00:33:04,660 --> 00:33:14,220
ุฏุนูˆู†ุง ู†ู‚ุงุฑู† X ูˆ Z. ุงู„ุขู†ุŒ ู„ู„ู…ุซุงู„ ู‡ุฐุงุŒ ุงู„ู…ุนู†ู‰ 100 ูˆ
381
00:33:14,220 --> 00:33:15,000
Sigma ู‡ูˆ 50.
382
00:33:17,880 --> 00:33:18,340
ุงู„ุขู†ุŒ ู„ู€
383
00:33:30,670 --> 00:33:44,390
ุนู† ุทุฑูŠู‚ ุงู„ุงุณุชุฎุฏุงู… ุงู„ุงุณุชุฎุฏุงู… ุงู„ุงุณุชุฎุฏุงู… ุงู„ุงุณุชุฎุฏุงู…
384
00:33:44,390 --> 00:33:50,250
ุงู„ุงุณุชุฎุฏุงู… ุงู„ุงุณุชุฎุฏุงู… ุงู„ุงุณุชุฎุฏุงู… ุงู„ุงุณุชุฎุฏุงู…only the
385
00:33:50,250 --> 00:33:54,470
scale has changed ูŠุนู†ูŠ ู†ูุณ ุงู„ุชูˆุฒูŠุน ุณูˆุงุก normal
386
00:33:54,470 --> 00:33:58,470
distribution ุฃูˆ standardized ูŠุนู†ูŠ ุงู„ุชูˆุฒูŠุน ุงู„ุทุจูŠุนูŠ
387
00:33:58,470 --> 00:34:04,610
ูˆ ุงู„ู…ุนูŠุงุฑ ู…ุง ู„ู‡ู… ู†ูุณ ุงู„ุดูƒู„ ุจุณ ุงู„ scale ุงุฎุชู„ู ุจุนุฏ
388
00:34:04,610 --> 00:34:11,630
ู…ุง ูƒุงู† ู‡ู†ุง 100 ูˆ 200 ุตุงุฑุช 02 ูˆ ู‡ูƒุฐุงู†ุณุชุทูŠุน ุฃู† ู†ุนุฑู
389
00:34:11,630 --> 00:34:15,990
ุงู„ู…ุดูƒู„ุฉ ููŠ ุงู„ู…ุฌู…ูˆุนุงุช ุงู„ุฃุตู„ูŠุฉ ุฃูˆ ุงู„ู…ุฌู…ูˆุนุงุช ุงู„ุตุญูŠุญุฉ
390
00:34:15,990 --> 00:34:16,630
ุฃูˆ ุงู„ู…ุฌู…ูˆุนุงุช ุงู„ุตุญูŠุญุฉ ุฃูˆ ุงู„ู…ุฌู…ูˆุนุงุช ุงู„ุตุญูŠุญุฉ ุฃูˆ
391
00:34:16,630 --> 00:34:16,710
ุงู„ู…ุฌู…ูˆุนุงุช ุงู„ุตุญูŠุญุฉ ุฃูˆ ุงู„ู…ุฌู…ูˆุนุงุช ุงู„ุตุญูŠุญุฉ ุฃูˆ
392
00:34:16,710 --> 00:34:17,770
ุงู„ู…ุฌู…ูˆุนุงุช ุงู„ุตุญูŠุญุฉ ุฃูˆ ุงู„ู…ุฌู…ูˆุนุงุช ุงู„ุตุญูŠุญุฉ ุฃูˆ
393
00:34:17,770 --> 00:34:19,970
ุงู„ู…ุฌู…ูˆุนุงุช ุงู„ุตุญูŠุญุฉ ุฃูˆ ุงู„ู…ุฌู…ูˆุนุงุช ุงู„ุตุญูŠุญุฉ ุฃูˆ
394
00:34:19,970 --> 00:34:20,670
ุงู„ู…ุฌู…ูˆุนุงุช ุงู„ุตุญูŠุญุฉ ุฃูˆ ุงู„ู…ุฌู…ูˆุนุงุช ุงู„ุตุญูŠุญุฉ ุฃูˆ
395
00:34:20,670 --> 00:34:21,330
ุงู„ู…ุฌู…ูˆุนุงุช ุงู„ุตุญูŠุญุฉ ุฃูˆ ุงู„ู…ุฌู…ูˆุนุงุช ุงู„ุตุญูŠุญุฉ ุฃูˆ
396
00:34:21,330 --> 00:34:22,990
ุงู„ู…ุฌู…ูˆุนุงุช ุงู„ุตุญูŠุญุฉ ุฃูˆ ุงู„ู…ุฌู…ูˆุนุงุช ุงู„ุตุญูŠุญุฉ ุฃูˆ
397
00:34:22,990 --> 00:34:30,790
ุงู„ู…ุฌู…ูˆุนุงุช ุงู„ุตุญูŠุญุฉ ุฃูˆ
398
00:34:30,790 --> 00:34:31,710
ุงู„ู…ุฌู…ูˆุน
399
00:34:37,620 --> 00:34:40,500
ุงู„ุณุคุงู„ ุงู„ุขู† ู‡ูˆ ูƒูŠู ูŠู…ูƒู†ู†ุง ุฃู† ู†ุฌุฏ ุงู„ูˆุงู‚ุนุงุช ุงู„ุทุจูŠุนูŠุฉ
400
00:34:40,500 --> 00:34:47,600
ู‡ุฐู‡ ู‡ูŠ ุงู„ู‡ุฏู ุงู„ุฃูˆู„ ุงู„ุขู† ุฅุฐุง ูƒุงู† ู„ุฏูŠู†ุง ุทุจูŠุนูŠุฉ
401
00:34:47,600 --> 00:34:51,020
ุทุจูŠุนูŠุฉ ูˆู†ุญู†
402
00:34:51,020 --> 00:34:57,060
ู…ู‡ุชู…ูˆู† ุจุงู„ู…ู†ุทู‚ุฉ ุจูŠู† a ูˆ b ุณู†ุณุชุฎุฏู… ู‡ุฐู‡ ุงู„ุชุตู…ูŠู… ุจูŠ
403
00:34:57,060 --> 00:35:02,080
ุจูŠ ุชุนู†ูŠ ุงู„ูˆุงู‚ุน
404
00:35:02,080 --> 00:35:12,680
X ุจูŠู† a ูˆ b ุฅู…ุง ูŠู…ูƒู†ูƒ ูƒุชุงุจุฉx โ‰ฅ b โ‰ฅ b ุฃูˆ ูู‚ุท ุจุฏูˆู†
405
00:35:12,680 --> 00:35:19,240
ุฅู‚ู„ ุตูŠู† x โ‰ฅ a โ‰ค b ู„ุฃู† ู…ูุฑูˆุถ ุฃูŠ ู‚ูŠู…ุฉ ู…ุญุฏุฏุฉ ูุงุฑู‚ุฉ
406
00:35:19,240 --> 00:35:33,900
ูุงุฑู‚ุฉ ูุงุฑู‚ุฉ ูุงุฑู‚ุฉ ูุงุฑู‚ุฉ
407
00:35:33,900 --> 00:35:39,670
ูุงุฑู‚ุฉ ูุงุฑู‚ุฉ ูุงุฑู‚ุฉุจุนู† ุทุฑูŠู‚ ุจูŠ ุงูˆ ุงูƒุณ ุงุฐุง ูƒุงู† ู„ุฏูŠู†ุง
408
00:35:39,670 --> 00:35:44,470
ุงูŠู‚ุงู„ ุตูŠู† ุงูˆ ู„ุง ุงูŠู‚ุงู„ ุตูŠู† ุจูŠุฑ ู‡ูŠุฑ ู‡ู… ู†ูุณ ุงู„ุงุดูŠุงุก
409
00:35:44,470 --> 00:35:48,290
ูŠุนู†ูŠ ุณูˆุงุก ููŠ ุนู„ุงู…ุฉ ู„ูŠุณุงูˆุฉ ู…ุงููŠุด ุงู„ุงุชู†ูŠู† ู…ุงู„ู‡ู… ู†ูุณ
410
00:35:48,290 --> 00:35:55,430
ุงู„ุดูŠุก ูŠุนู†ูŠ ู„ูˆ ุจูƒุชุจ ุจูŠ ุงูˆ ุงูŠ ุงู‚ู„ ู…ู† ุงูˆ ุงูŠู‚ุงู„ ู†ูุณ ู„ูˆ
411
00:35:55,430 --> 00:35:58,110
ูƒุชุจุช ู…ู† ุบูŠุฑ ุงู„ู…ุณุงูˆุฉ ู…ู† ุบูŠุฑ ุงู„ูŠุณุงูˆุฉ
412
00:36:14,900 --> 00:36:19,180
ูŠุนู†ูŠ equal sign ู…ุด ู…ู‡ู…ุฉ ููŠ ุงู„ุชูˆุฒูŠุน ุงู„ุทุจูŠุนูŠ ู„ู…ุง
413
00:36:19,180 --> 00:36:22,580
ุจุญูƒูŠ greater than or equal they have the same
414
00:36:22,580 --> 00:36:28,220
meaning now
415
00:36:28,220 --> 00:36:32,480
since we have symmetric distribution it means the
416
00:36:32,480 --> 00:36:38,120
area to the right equals the area to the left now
417
00:36:38,120 --> 00:36:41,780
the total area under the curve is one ู…ุณุงุญุฉ ุชุญุช
418
00:36:41,780 --> 00:36:47,940
ุงู„ู…ุฑุญู†ุฉ ุจูˆุงุญุฏ ูƒู„ ุงู„ู…ุณุงุญุฉูู…ุนู†ู‰ ูƒุฏู‡ ูƒูŠุฑุจ ู…ุชุณุงูˆู…ุŒ
419
00:36:47,940 --> 00:36:52,200
ู„ุฐู„ูƒ ู†ุตู ุฃุนู„ู‰ ุงู„ู…ุตุทู„ุญ ูˆ ู†ุตู ุชุญุชู‡ ู„ุฃู† ู‡ู†ุง 50% ูˆ ู‡ู†ุง
420
00:36:52,200 --> 00:36:57,020
50%ุŸ ุฃู‡ุŒ ู‡ุฐู‡ 50% ูˆ ู‡ุฐู‡ 50%ุŒ ู…ุน ูƒุฏู‡ ุงู„ .. ุงู„ .. ุงู„
421
00:36:57,020 --> 00:36:57,580
.. ุงู„ .. ุงู„ .. ุงู„ .. ุงู„ .. ุงู„ .. ุงู„ .. ุงู„ .. ุงู„ ..
422
00:36:57,580 --> 00:36:57,600
ุงู„ .. ุงู„ .. ุงู„ .. ุงู„ .. ุงู„ .. ุงู„ .. ุงู„ .. ุงู„ .. ุงู„
423
00:36:57,600 --> 00:36:58,880
.. ุงู„ .. ุงู„ .. ุงู„ .. ุงู„ .. ุงู„ .. ุงู„ .. ุงู„ .. ุงู„ ..
424
00:36:58,880 --> 00:37:00,220
ุงู„ .. ุงู„ .. ุงู„ .. ุงู„ .. ุงู„ .. ุงู„ .. ุงู„ .. ุงู„ .. ุงู„
425
00:37:00,220 --> 00:37:01,740
.. ุงู„ .. ุงู„ .. ุงู„ .. ุงู„ .. ุงู„ .. ุงู„ .. ุงู„ .. ุงู„ ..
426
00:37:01,740 --> 00:37:02,800
.. ุงู„ .. ุงู„ .. ุงู„ .. ุงู„ .. ุงู„ .. ุงู„ .. ุงู„ .. ุงู„ ..
427
00:37:02,800 --> 00:37:08,240
.. ุงู„ .. ุงู„ .. ุงู„ .. ุงู„ .. ุงู„ .. ุงู„ .. ุงู„ .. ุงู„ ..
428
00:37:08,240 --> 00:37:13,840
ุงู„ .. ุงู„ ..
429
00:37:16,480 --> 00:37:19,380
ุฅุฐุง ุงู„ area ุนู„ูŠ ูŠู…ูŠู† ู„ู…ูŠูˆ ุจุชุณุงูˆูŠ ุงู„ area to the
430
00:37:19,380 --> 00:37:25,180
left of ู…ูŠูˆ and each one equals one half ู„ูŠุดุŸ ู„ุฃู†
431
00:37:25,180 --> 00:37:31,580
ุงู„ุชูˆุฒูŠุน ุงู„ุณูŠู…ุชุฑูŠูƒ ุฌุงูŠ ููŠ ุงู„ู†ุต ุงู„ mean ุงู„ area ูƒู„ู‡ุง
432
00:37:31,580 --> 00:37:35,700
under the curve is one ูุฌุณู…ู‡ุง ุฌุณู…ูŠู† ู†ุต ุนู„ูŠ ูŠู…ูŠู† ูˆ
433
00:37:35,700 --> 00:37:38,160
ู†ุต ุนู„ูŠ ุงู„ุดู…ุงู„ ุฅุฐุง ุงู„ area to the right of the mean
434
00:37:38,160 --> 00:37:41,540
is one half and equals the area to the left of the
435
00:37:41,540 --> 00:37:44,880
mean is also one half ุฅุฐุง ุงู„ู…ุณุงุญุงุช ุนู„ูŠ ูŠู…ูŠู† ูˆ ุนู„ูŠ
436
00:37:44,880 --> 00:37:51,880
ุงู„ุดู…ุงู„ ู…ุง ู‡ู…ุŸุฒูŠ ุจุนุถ ูˆูƒู„ ู…ุณุงุญุฉ ุงูŠุด ุจุชุณุงูˆูŠ ูˆุงุญุฏ ุงุฐุง
437
00:37:51,880 --> 00:37:55,160
ูƒู„ ู…ุณุงุญุฉ equal one ูˆ ุงู„ left ุจูŠุณุงูˆูŠ ุงู„ right
438
00:37:55,160 --> 00:38:00,140
ุจูŠุณุงูˆูŠ one half next time ุงู† ุดุงุก ุงู„ู„ู‡ we will
439
00:38:00,140 --> 00:38:04,760
continue and see how can we compute the
440
00:38:04,760 --> 00:38:07,800
probabilities using the standardized normal table
441
00:38:07,800 --> 00:38:12,380
ุงู„ุชุงุจู„ ุงู„ู…ูˆุฌูˆุฏ ููŠ ู†ู‡ุงูŠุฉ ุงู„ูƒุชุงุจ ู…ุนุงูƒ ูุงู„ู„ู‚ุงุก ุฌุงูŠุจ
442
00:38:12,380 --> 00:38:13,060
ู†ูƒู…ู„ ุงู† ุดุงุก ุงู„ู„ู‡