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Santรฉ Publique Preparation (Pr. Chhea Chorvann)

 

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1) แž€แžถแžšแžŸแžทแž€แŸ’แžŸแžถแž‘แŸ…แž›แžพแžŸแŸ†แžŽแžถแž€แž“แžทแžŸแŸ’แžŸแžทแžแž†แŸ’แž“แžถแŸ†แž‘แžธ แŸขAแž…แŸ†แž“แžฝแž“ แŸกแŸก แž“แžถแž€แŸ‹แž”แžถแž“แžšแž€แžƒแžพแž‰แžแžถแž“แžทแžŸแŸ’แžŸแžทแžแž”แžถแž“แž…แŸ†แžŽแžถแž™แž–แŸแž›แžŸแžทแž€แŸ’แžŸแžถแžšแž™แŸˆแž–แŸแž› แŸกแŸ แŸ แž“แžถแž‘แžธแž€แŸ’แž“แžปแž„แŸกแžแŸ’แž„แŸƒแž แžพแž™แž˜แžถแž“ standard deviation 20 แž“แžถแž‘แžธแŸ” แž‚แŸแž…แž„แŸ‹แž’แŸ’แžœแžพ hypothesis testing แžแžถแž“แžทแžŸแŸ’แžŸแžทแžแž†แŸ’แž“แžถแŸ†แž‘แžธ แŸขA แž”แžถแž“แžšแŸ€แž“แžšแž™แŸ‡แž–แŸแž›2แž˜แŸ‰แŸ„แž„แžŠแŸ‚แžšแžฌแž‘แŸ แž แžพแž™แž”แžถแž“แžšแž€แžƒแžพแž‰ P-value = 0.049แŸ” แžแžพแž‚แŸแžขแžถแž…แžŸแž“แŸ’แž“แžทแžŠแŸ’แž‹แžถแž“แž”แžถแž“แž™แŸ‰แžถแž„แžŠแžผแž…แž˜แŸ’แžแŸแž…?

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2) แž‚แŸ„แž›แž€แžถแžšแžŽแŸแžŸแŸ†แžšแžถแž”แŸ‹แž’แŸ’แžœแžพแž€แžถแžšแžŸแŸ†แžšแŸแž…แž…แžทแžแŸ’แžแž“แŸ…แž€แŸ’แž“แžปแž„แž€แžถแžšแž’แŸ’แžœแžพhypothesis testing แž‚แžบแžแŸ’แžšแžผแžœแž–แžนแž„แž•แŸ’แž“แŸ‚แž€แž›แžพ

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3) แž€แžถแžšแžŸแžทแž€แŸ’แžŸแžถแž‘แŸ…แž›แžพแžŸแŸ†แžŽแžถแž€แž“แŸƒแž“แžทแžŸแŸ’แžŸแžทแžแž†แŸ’แž“แžถแŸ†แž‘แžธแŸขA แž…แŸ†แž“แžฝแž“แŸกแŸฅแž“แžถแž€แŸ‹ แžšแž€แžƒแžพแž‰แžแžถแž“แžทแžŸแŸ’แžŸแžทแžแž”แžถแž“แž…แŸ†แžŽแžถแž™แž–แŸแž›แžŸแžทแž€แŸ’แžŸแžถแž“แŸ…แž•แŸ’แž‘แŸ‡แžšแž™แŸ‡แž–แŸแž›แž˜แž’แŸ’แž™แž˜ แŸกแŸขแŸ แž“แžถแž‘แžธ แž€แŸ’แž“แžปแž„แŸก แžแŸ’แž„แŸƒ แž แžพแž™แž˜แžถแž“ standard deviation แŸฆแŸ แž“แžถแž‘แžธ แž แžพแž™แž€แžถแžšแžŸแžทแž€แŸ’แžŸแžถแž‘แŸ…แž›แžพแžŸแŸ†แžŽแžถแž€แž“แžทแžŸแŸ’แžŸแžทแžแž†แŸ’แž“แžถแŸ†แž‘แžธ แŸขCแž…แŸ†แž“แžฝแž“ แŸกแŸก แž“แžถแž€แŸ‹แž”แžถแž“แžšแž€แžƒแžพแž‰แžแžถแž“แžทแžŸแŸ’แžŸแžทแžแž”แžถแž“แž…แŸ†แžŽแžถแž™แž–แŸแž›แžŸแžทแž€แŸ’แžŸแžถแžšแž™แŸˆแž–แŸแž› แŸกแŸ แŸ แž“แžถแž‘แžธแž€แŸ’แž“แžปแž„แŸกแžแŸ’แž„แŸƒแž แžพแž™แž˜แžถแž“ standard deviation 20 แž“แžถแž‘แžธแŸ”แž‚แŸแž’แŸ’แžœแžพแžแŸแžŸแŸ’แžแž…แž„แŸ‹แžŠแžนแž„แžแžถแžแžพแžšแž™แŸ‡แž–แŸแž›แžŸแžทแž€แŸ’แžŸแžถแžšแž”แžŸแŸ‹แžแŸ’แž“แžถแž€แŸ‹แž‘แžถแŸ†แž„แž–แžธแžŸแŸ’แž˜แžพแžšแž‚แŸ’แž“แžถแžŠแŸ‚แžšแžฌแž‘แŸ แž แžพแž™แž‘แž‘แžฝแž›แž”แžถแž“ P-value แžšแž”แžŸแŸ‹แžแŸแžŸแŸ’แžแžŸแŸ’แž˜แžพ แŸฅ%แŸ” แž™แŸ„แž„แžแžถแž˜แž›แž‘แŸ’แž‹แž•แž›แž“แŸแŸ‡แž‚แŸแžขแžถแž…แžŸแž“แŸ’แž“แžทแžŠแŸ’แž‹แžถแž“แžแžถ

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4) แž€แžถแžšแžŸแžทแž€แŸ’แžŸแžถแž‘แŸ…แž›แžพแžŸแŸ†แžŽแžถแž€แž“แŸƒแž“แžทแžŸแŸ’แžŸแžทแžแž†แŸ’แž“แžถแŸ†แž‘แžธ แŸขAแž…แŸ†แž“แžฝแž“ แŸกแŸก แž“แžถแž€แŸ‹แž”แžถแž“แžšแž€แžƒแžพแž‰แžแžถแž“แžทแžŸแŸ’แžŸแžทแžแž”แžถแž“แž…แŸ†แžŽแžถแž™แž–แŸแž›แžŸแžทแž€แŸ’แžŸแžถแžšแž™แŸˆแž–แŸแž›โ€‹ แŸกแŸ แŸ แž“แžถแž‘แžธแž€แŸ’แž“แžปแž„แŸกแžแŸ’แž„แŸƒแž แžพแž™แž˜แžถแž“ standard deviation 20 แž“แžถแž‘แžธแŸ” แž‚แŸแž…แž„แŸ‹แž’แŸ’แžœแžพ hypothesis testing แžแžถแž“แžทแžŸแŸ’แžŸแžทแžแž†แŸ’แž“แžถแŸ†แž‘แžธ แŸข แž”แžถแž“แž…แŸ†แžŽแžถแž™แž–แŸแž›แžšแŸ€แž“แžšแž™แŸˆแž–แŸแž›แžแžทแž…แž‡แžถแž„ แŸขแž˜แŸ‰แŸ„แž„ แŸ” แžแžพแž‚แŸแžแŸ’แžšแžผแžœแžŸแžšแžŸแŸแžš hypothesis แž™แŸ‰แžถแž„แžŠแžผแž…แž˜แŸ’แžแŸแž…?

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5) แž€แžถแžšแžŸแžทแž€แŸ’แžŸแžถแž‘แŸ…แž›แžพแžŸแŸ†แžŽแžถแž€แž“แŸƒแž“แžทแžŸแŸ’แžŸแžทแžแž†แŸ’แž“แžถแŸ†แž‘แžธแŸขA แž…แŸ†แž“แžฝแž“แŸกแŸฅแž“แžถแž€แŸ‹ แžšแž€แžƒแžพแž‰แžแžถแž“แžทแžŸแŸ’แžŸแžทแžแž”แžถแž“แž…แŸ†แžŽแžถแž™แž–แŸแž›แžŸแžทแž€แŸ’แžŸแžถแž“แŸ…แž•แŸ’แž‘แŸ‡แžšแž™แŸˆแž–แŸแž›แž˜แž’แŸ’แž™แž˜ แŸกแŸขแŸ แž“แžถแž‘แžธโ€‹ แž€แŸ’แž“แžปแž„แŸกโ€‹ แžแŸ’แž„แŸƒ แž แžพแž™แž˜แžถแž“ standard deviation แŸฆแŸ แž“แžถแž‘แžธแŸ”

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6) แžŸแžผแž˜แžšแžพแžŸแž™แž€แžƒแŸ’แž›แžถแž˜แžฝแž™แžŠแŸ‚แž›แžแŸ’แžšแžนแž˜แžแŸ’แžšแžผแžœแž‡แžถแž„แž‚แŸแž–แžธแžƒแŸ’แž›แžถแžแžถแž„แž€แŸ’แžšแŸ„แž˜ แžŠแžพแž˜แŸ’แž”แžธแž”แž„แŸ’แž แžถแž‰แž–แžธแž‚แŸ„แž›แž€แžถแžšแžŽแŸแž“แŸƒแž€แžถแžšแž’แŸ’แžœแžพ hypothesis testing

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7) แž€แžถแžšแžŸแžทแž€แŸ’แžŸแžถแž‘แŸ…แž›แžพแžŸแŸ†แžŽแžถแž€แž“แŸƒแž“แžทแžŸแŸ’แžŸแžทแžแž†แŸ’แž“แžถแŸ†แž‘แžธแŸขB แž…แŸ†แž“แžฝแž“แŸกแŸฅแž“แžถแž€แŸ‹ แžšแž€แžƒแžพแž‰แžแžถแž“แžทแžŸแŸ’แžŸแžทแžแž”แžถแž“แž…แŸ†แžŽแžถแž™แž–แŸแž›แžŸแžทแž€แŸ’แžŸแžถแž“แŸ…แž”แžŽแŸ’แžŽแžถแž›แŸแž™แž‡แžถแž˜แž’แŸ’แž™แž˜ 50 แž“แžถแž‘แžธ แž€แŸ’แž“แžปแž„แŸก แžแŸ’แž„แŸƒแŸ” แž‚แŸแž…แž„แŸ‹แž’แŸ’แžœแžพ hypothesis testing แžŠแŸ„แž™แž˜แžถแž“ H0: แžšแž™แŸ‡แž–แŸแž›แžŸแžทแž€แŸ’แžŸแžถแž€แŸ’แž“แžปแž„แž”แžŽแŸ’แžŽแžถแž›แŸแž™โ‰ฅ แŸฆแŸ แž“แžถแž‘แžธ แž“แžทแž„ Ha: แžšแž™แŸ‡แž–แŸแž›แžŸแžทแž€แŸ’แžŸแžถแž€แŸ’แž“แžปแž„แž”แžŽแŸ’แžŽแžถแž›แŸแž™ < แŸฆแŸ แž“แžถแž‘แžธแŸ” แž€แžถแžšแž’แŸ’แžœแžพแžแŸแžŸแŸ’แžแž”แŸ‚แž”แž“แŸแŸ‡แž‡แžถแž”แŸ’แžšแž—แŸแž‘

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8) แžแžพแžขแŸ’แžœแžธแžแŸ’แž›แŸ‡แž‡แžถแž•แŸ’แž“แŸ‚แž€แžšแž”แžŸแŸ‹ Inferential statistics?

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9) แž€แžถแžšแžŸแžทแž€แŸ’แžŸแžถแž‘แŸ…แž›แžพแžŸแŸ†แžŽแžถแž€แž“แŸƒแž“แžทแžŸแŸ’แžŸแžทแžแž†แŸ’แž“แžถแŸ†แž‘แžธ แŸขAแž…แŸ†แž“แžฝแž“ แŸกแŸก แž“แžถแž€แŸ‹แž”แžถแž“แžšแž€แžƒแžพแž‰แžแžถแž“แžทแžŸแŸ’แžŸแžทแžแž”แžถแž“แž…แŸ†แžŽแžถแž™แž–แŸแž›แžŸแžทแž€แŸ’แžŸแžถแžšแž™แŸˆแž–แŸแž›โ€‹ แŸกแŸ แŸ แž“แžถแž‘แžธแž€แŸ’แž“แžปแž„แŸกแžแŸ’แž„แŸƒแž แžพแž™แž˜แžถแž“ standard deviation 20 แž“แžถแž‘แžธแŸ” แž‚แŸแž…แž„แŸ‹แž’แŸ’แžœแžพ hypothesis testing แžแžถแž“แžทแžŸแŸ’แžŸแžทแžแž†แŸ’แž“แžถแŸ†แž‘แžธ แŸข แž”แžถแž“แž…แŸ†แžŽแžถแž™แž–แŸแž›แžšแŸ€แž“แžšแž™แŸˆแž–แŸแž› แŸขแž˜แŸ‰แŸ„แž„ แŸ” แžแžพแž‚แŸแžแŸ’แžšแžผแžœแžŸแžšแžŸแŸแžš Hypothesis แž™แŸ‰แžถแž„แžŠแžผแž…แž˜แŸ’แžแŸแž…?

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10) แžšแžŸแžทแž€แŸ’แžŸแžถแž‘แŸ…แž›แžพแžŸแŸ†แžŽแžถแž€แž“แŸƒแž“แžทแžŸแŸ’แžŸแžทแžแž†แŸ’แž“แžถแŸ†แž‘แžธ แŸขAแž…แŸ†แž“แžฝแž“ แŸกแŸก แž“แžถแž€แŸ‹แž”แžถแž“แžšแž€แžƒแžพแž‰แžแžถแž“แžทแžŸแŸ’แžŸแžทแžแž”แžถแž“แž…แŸ†แžŽแžถแž™แž–แŸแž›แžŸแžทแž€แŸ’แžŸแžถแžšแž™แŸˆแž–แŸแž›โ€‹ แŸกแŸ แŸ แž“แžถแž‘แžธแž€แŸ’แž“แžปแž„แŸกแžแŸ’แž„แŸƒแž แžพแž™แž˜แžถแž“ standard deviation 20 แž“แžถแž‘แžธแŸ” แž‚แŸแž…แž„แŸ‹แž’แŸ’แžœแžพ hypothesis testing แžŠแžพแž˜แŸ’แž”แžธแž†แŸ’แž›แžพแž™แž‘แŸ…แž“แžนแž„แžŸแŸ†แžŽแžฝแžšแžแžถแžแžพ แž“แžทแžŸแŸ’แžŸแžทแžแž†แŸ’แž“แžถแŸ†แž‘แžธ แŸขC แž”แžถแž“แžšแŸ€แž“แžšแž™แŸ‡แž–แŸแž› 2แž˜แŸ‰แŸ„แž„แžŠแŸ‚แžšแžฌแž‘แŸแŸ” แžแžพแž‚แŸแž’แŸ’แžœแžพแžแŸแžŸแŸ’แžแž˜แžฝแž™แžŽแžถแžแžถแž„แž€แŸ’แžšแŸ„แž˜?

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11) แžแžพแžขแŸ’แžœแžธแžแŸ’แž›แŸ‡แž‡แžถแž•แŸ’แž“แŸ‚แž€แžšแž”แžŸแŸ‹Descriptive statistics?

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12) แžแžพแžขแŸ’แžœแžธแžแŸ’แž›แŸ‡แžŠแŸ‚แž›แž˜แžทแž“แž˜แŸ‚แž“แž‡แžถแž•แŸ’แž“แŸ‚แž€แžšแž”แžŸแŸ‹Descriptive statistics?

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13) แžšแžถแž›แŸ‹แž˜แžถแž“แžขแŸ’แž“แž€แžŸแŸ’แžšแžถแžœแž‡แŸ’แžšแžถแžœแž”แŸ’แžšแžพแž”แŸ’แžšแžถแžŸแŸ‹ hypothesis testing แž˜แžถแž“แž€แŸ†แž แžปแžŸ(error) แž–แžธแžšแžŠแŸ‚แž›แžขแžถแž…แž€แžพแžแžกแžพแž„แŸ” แžแžพแžƒแŸ’แž›แžถแžแžถแž„แž€แŸ’แžšแŸ„แž˜แž“แŸแŸ‡ แžƒแŸ’แž›แžถแž˜แžฝแž™แžŽแžถแžŠแŸ‚แž›แžแŸ’แžšแžนแž˜แž‘แŸ…แž“แžนแž„แž“แžทแž™แž˜แž“แŸแž™แžšแž”แžŸแŸ‹แž”แŸ’แžšแž—แŸแž‘แžšแž”แžŸแŸ‹ error?

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14) แžŸแŸ’แžแžทแžแžทแžœแžทแž‘แŸ’แž™แžถ(statistics) แž˜แžถแž“แž…แŸ‚แž€แž…แŸแž‰แž‡แžถ

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15) แž€แžถแžšแžŸแžทแž€แŸ’แžŸแžถแž‘แŸ…แž›แžพแžŸแŸ†แžŽแžถแž€แž“แŸƒแž“แžทแžŸแŸ’แžŸแžทแžแž†แŸ’แž“แžถแŸ†แž‘แžธแŸขA แž…แŸ†แž“แžฝแž“แŸกแŸฅแž“แžถแž€แŸ‹ แžšแž€แžƒแžพแž‰แžแžถแž“แžทแžŸแŸ’แžŸแžทแžแž”แžถแž“แž…แŸ†แžŽแžถแž™แž–แŸแž›แžŸแžทแž€แŸ’แžŸแžถแž“แŸ…แž•แŸ’แž‘แŸ‡แžšแž™แŸ‡แž–แŸแž›แž˜แž’แŸ’แž™แž˜ แŸกแŸขแŸ แž“แžถแž‘แžธ แž€แŸ’แž“แžปแž„แŸก แžแŸ’แž„แŸƒ แž แžพแž™แž˜แžถแž“ standard deviation แŸฆแŸ แž“แžถแž‘แžธ แž แžพแž™แž€แžถแžšแžŸแžทแž€แŸ’แžŸแžถแž‘แŸ…แž›แžพแžŸแŸ†แžŽแžถแž€แž“แžทแžŸแŸ’แžŸแžทแžแž†แŸ’แž“แžถแŸ†แž‘แžธ แŸขCแž…แŸ†แž“แžฝแž“ แŸกแŸก แž“แžถแž€แŸ‹แž”แžถแž“แžšแž€แžƒแžพแž‰แžแžถแž“แžทแžŸแŸ’แžŸแžทแžแž”แžถแž“แž…แŸ†แžŽแžถแž™แž–แŸแž›แžŸแžทแž€แŸ’แžŸแžถแžšแž™แŸˆแž–แŸแž› แŸกแŸ แŸ แž“แžถแž‘แžธแž€แŸ’แž“แžปแž„แŸกแžแŸ’แž„แŸƒแž แžพแž™แž˜แžถแž“ standard deviation 20 แž“แžถแž‘แžธแŸ”แž‚แŸแž…แž„แŸ‹แž”แŸ’แžšแŸ€แž”แž’แŸ€แž”แžแžถแžแžพแž“แžทแžŸแŸ’แžŸแžทแžแž†แŸ’แž“แžถแŸ†แž‘แžธ แŸขA แž”แžถแž“แž…แŸ†แžŽแžถแž™แž–แŸแž›แžšแŸ€แž“แž…แŸ’แžšแžพแž“แž‡แžถแž„แž“แžทแžŸแŸ’แžŸแžทแžแž†แŸ’แž“แžถแŸ†แž‘แžธ 2 CแŸ” แžแžพแž‚แŸแžแŸ’แžšแžผแžœแžŸแžšแžŸแŸแžš statistical hypothesis แž™แŸ‰แžถแž„แžŠแžผแž…แž˜แŸ’แžแŸแž…?

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16) แž€แžถแžšแžŸแžทแž€แŸ’แžŸแžถแž‘แŸ…แž›แžพแžŸแŸ†แžŽแžถแž€แž“แŸƒแž“แžทแžŸแŸ’แžŸแžทแžแž†แŸ’แž“แžถแŸ†แž‘แžธแŸขA แž…แŸ†แž“แžฝแž“แŸกแŸฅแž“แžถแž€แŸ‹ แžšแž€แžƒแžพแž‰แžแžถแž“แžทแžŸแŸ’แžŸแžทแžแž”แžถแž“แž…แŸ†แžŽแžถแž™แž–แŸแž›แžŸแžทแž€แŸ’แžŸแžถแž“แŸ…แž•แŸ’แž‘แŸ‡แžšแž™แŸ‡แž–แŸแž›แž˜แž’แŸ’แž™แž˜ แŸกแŸขแŸ แž“แžถแž‘แžธโ€‹ แž€แŸ’แž“แžปแž„แŸกโ€‹ แžแŸ’แž„แŸƒ แž แžพแž™แž˜แžถแž“ standard deviation แŸฆแŸ แž“แžถแž‘แžธ แž แžพแž™แž€แžถแžšแžŸแžทแž€แŸ’แžŸแžถแž‘แŸ…แž›แžพแžŸแŸ†แžŽแžถแž€แž“แžทแžŸแŸ’แžŸแžทแžแž†แŸ’แž“แžถแŸ†แž‘แžธ แŸขC แž…แŸ†แž“แžฝแž“ แŸกแŸก แž“แžถแž€แŸ‹แž”แžถแž“แžšแž€แžƒแžพแž‰แžแžถแž“แžทแžŸแŸ’แžŸแžทแžแž”แžถแž…แŸ†แžŽแžถแž™แž–แŸแž›แžŸแžทแž€แŸ’แžŸแžถแžšแž™แŸˆแž–แŸแž› แŸกแŸ แŸ แž“แžถแž‘แžธแž€แŸ’แž“แžปแž„แŸกแžแŸ’แž„แŸƒแž แžพแž™แž˜แžถแž“ standard deviation 20 แž“แžถแž‘แžธแŸ” แžแžถแž˜แž€แžถแžšแž–แžทแž“แžทแžแŸ’แž™แž˜แžพแž›แž‘แŸ…แž›แžพแž€แžถแžšแžšแž€แžƒแžพแž‰แž€แŸ’แž“แžปแž„แžŸแŸ†แžŽแžถแž€แž‘แžถแŸ†แžถแž„แž–แžธแžšแž“แŸแŸ‡ แž™แžพแž„แžขแžถแž…แžŸแž“แŸ’แž“แžทแžŠแŸ’แž‹แžถแž“แž”แžถแž“แžแžถ

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17) แž€แžถแžšแžŸแžทแž€แŸ’แžŸแžถแž‘แŸ…แž›แžพแžŸแŸ†แžŽแžถแž€แž“แŸƒแž“แžทแžŸแŸ’แžŸแžทแžแž†แŸ’แž“แžถแŸ†แž‘แžธแŸขB แž…แŸ†แž“แžฝแž“แŸกแŸฅแž“แžถแž€แŸ‹ แžšแž€แžƒแžพแž‰แžแžถแž“แžทแžŸแŸ’แžŸแžทแžแž”แžถแž“แž…แŸ†แžŽแžถแž™แž–แŸแž›แžŸแžทแž€แŸ’แžŸแžถแž“แŸ…แž”แžŽแŸ’แžŽแžถแž›แŸแž™แž‡แžถแž˜แž’แŸ’แž™แž˜ 50 แž“แžถแž‘แžธ แž€แŸ’แž“แžปแž„แŸก แžแŸ’แž„แŸƒแŸ” แž‚แŸแž…แž„แŸ‹แž’แŸ’แžœแžพ hypothesis testing แžŠแŸ„แž™แžŸแžšแžŸแŸแžแžถ H0: แžšแž™แŸ‡แž–แŸแž›แžŸแžทแž€แŸ’แžŸแžถแž€แŸ’แž“แžปแž„แž”แžŽแŸ’แžŽแžถแž›แŸแž™แžŸแŸ’แž˜แžพ แŸฆแŸ แž“แžถแž‘แžธ แž“แžทแž„ Ha: แžšแž™แŸ‡แž–แŸแž›แžŸแžทแž€แŸ’แžŸแžถแž€แŸ’แž“แžปแž„แž”แžŽแŸ’แžŽแžถแž›แŸแž™ โ‰  แŸฆแŸ แž“แžถแž‘แžธแŸ” แž€แžถแžšแž’แŸ’แžœแžพแžแŸแžŸแŸ’แžแž”แŸ‚แž”แž“แŸแŸ‡แž‡แžถแž”แŸ’แžšแž—แŸแž‘

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18) แž“แŸ…แž€แŸ’แž“แžปแž„ One sided hypothesis testing, แž™แžพแž„แžขแžถแž… Reject H0 แžŠแŸ„แž™แž”แŸ’แžšแžพแž”แŸ’แžšแžถแžŸแŸ‹ Z แžฌ t Distribution

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19) แžแžพแžขแŸ’แžœแžธแžแŸ’แž›แŸ‡แž‡แžถแž•แŸ’แž“แŸ‚แž€แžšแž”แžŸแŸ‹Descriptive statistics?

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20) แžแžพแžขแŸ’แžœแžธแžแŸ’แž›แŸ‡แžŠแŸ‚แž›แž‡แžถแž•แŸ’แž“แŸ‚แž€แžšแž”แžŸแŸ‹ Inferential statistics?

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21) แž“แŸ…แž€แŸ’แž“แžปแž„ hypothesis testing แž˜แžถแž“แž€แŸ†แž แžปแžŸ(error) แž–แžธแžšแžŠแŸ‚แž›แžขแžถแž…แž€แžพแžแžกแžพแž„แŸ” แžแžพแžƒแŸ’แž›แžถแžแžถแž„แž€แŸ’แžšแŸ„แž˜แž“แŸแŸ‡ แžƒแŸ’แž›แžถแž˜แžฝแž™แžŽแžถแžŠแŸ‚แž›แžแŸ’แžšแžนแž˜แžแŸ’แžšแžผแžœแž‘แŸ…แž“แžนแž„แž“แžทแž™แž˜แž˜แŸแž™แžšแž”แžŸแŸ‹ error.

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22) แž€แžถแžšแžŸแžทแž€แŸ’แžŸแžถแž‘แŸ…แž›แžพแžŸแŸ†แžŽแžถแž€แž“แŸƒแž“แžทแžŸแŸ’แžŸแžทแžแž†แŸ’แž“แžถแŸ†แž‘แžธแŸขB แž…แŸ†แž“แžฝแž“แŸกแŸฅแž“แžถแž€แŸ‹ แžšแž€แžƒแžพแž‰แžแžถแž“แžทแžŸแŸ’แžŸแžทแžแž”แžถแž“แž…แŸ†แžŽแžถแž™แž–แŸแž›แžŸแžทแž€แŸ’แžŸแžถแž“แŸ…แž”แžŽแŸ’แžŽแžถแž›แŸแž™แž‡แžถแž˜แž’แŸ’แž™แž˜ แŸฆแŸ แž“แžถแž‘แžธ แž€แŸ’แž“แžปแž„แŸก แžแŸ’แž„แŸƒ แž แžพแž™แž˜แžถแž“standard deviation แŸคแŸ แž“แžถแž‘แžธแŸ”แž‚แŸแžขแžถแž…แž”แŸ’แžšแžพ point estimation แžŠแžพแž˜แŸ’แž”แžธแž’แŸ’แžœแžพแž€แžถแžšแžŸแž“แŸ’แž“แžทแžŠแŸ’แž‹แžถแž“แžแžถ

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23) แž€แžถแžšแžŸแžทแž€แŸ’แžŸแžถแž‘แŸ…แž›แžพแžŸแŸ†แžŽแžถแž€แž“แŸƒแž“แžทแžŸแŸ’แžŸแžทแžแž†แŸ’แž“แžถแŸ†แž‘แžธแŸขA แž…แŸ†แž“แžฝแž“แŸกแŸฅแž“แžถแž€แŸ‹ แžšแž€แžƒแžพแž‰แžแžถแž“แžทแžŸแŸ’แžŸแžทแžแž”แžถแž“แž…แŸ†แžŽแžถแž™แž–แŸแž›แžŸแžทแž€แŸ’แžŸแžถแž“แŸ…แž•แŸ’แž‘แŸ‡แžšแž™แŸˆแž–แŸแž›แž˜แž’แŸ’แž™แž˜ แŸกแŸขแŸ แž“แžถแž‘แžธโ€‹ แž€แŸ’แž“แžปแž„แŸกโ€‹ แžแŸ’แž„แŸƒ แž แžพแž™แž˜แžถแž“ standard deviation แŸฆแŸ แž“แžถแž‘แžธ แž แžพแž™แž€แžถแžšแžŸแžทแž€แŸ’แžŸแžถแž‘แŸ…แž›แžพแžŸแŸ†แžŽแžถแž€แž“แžทแžŸแŸ’แžŸแžทแžแž†แŸ’แž“แžถแŸ†แž‘แžธ แŸขCแž…แŸ†แž“แžฝแž“ แŸกแŸกแž“แžถแž€แŸ‹แž”แžถแž“แžšแž€แžƒแžพแž‰แžแžถแž“แžทแžŸแŸ’แžŸแžทแžแž”แžถแž“แž…แŸ†แžŽแžถแž™แž–แŸแž›แžŸแžทแž€แŸ’แžŸแžถแžšแž™แŸˆแž–แŸแž› แŸกแŸ แŸ แž“แžถแž‘แžธแž€แŸ’แž“แžปแž„แŸกแžแŸ’แž„แŸƒแž แžพแž™แž˜แžถแž“ standard
deviation 20 แž“แžถแž‘แžธแŸ”แž‚แŸแž…แž„แŸ‹แž”แŸ’แžšแŸ€แž”แž’แŸ€แž”แžแžถแžแžพแž“แžทแžŸแŸ’แžŸแžทแžแž†แŸ’แž“แžถแŸ†แž‘แžธ แŸขA แž“แžทแž„ 2 B แž”แžถแž“แž…แŸ†แžŽแžถแž™แž–แŸแž›แžŸแžทแž€แŸ’แžŸแžถแžŸแŸ’แž˜แžพแžšแž‚แŸ’แž“แžถแžŠแŸ‚แžšแžฌแž‘แŸ แžแžพแž‚แŸแžแŸ’แžšแžผแžœแž’แŸ’แžœแžพ hypothesis testing แž”แŸ’แžšแž—แŸแž‘แžŽแžถ?

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24) แž€แžถแžšแžŸแžทแž€แŸ’แžŸแžถแž‘แŸ…แž›แžพแžŸแŸ†แžŽแžถแž€แž“แŸƒแž“แžทแžŸแŸ’แžŸแžทแžแž†แŸ’แž“แžถแŸ†แž‘แžธแŸขA แž…แŸ†แž“แžฝแž“แŸกแŸฅแž“แžถแž€แŸ‹ แžšแž€แžƒแžพแž‰แžแžถแž“แžทแžŸแŸ’แžŸแžทแžแž”แžถแž“แž…แŸ†แžŽแžถแž™แž–แŸแž›แžŸแžทแž€แŸ’แžŸแžถแžšแž™แŸˆแž–แŸแž›โ€‹แž˜แž’แŸ’แž™แž˜ แŸกแŸขแŸ แž“แžถแž‘แžธ แž€แŸ’แž“แžปแž„แŸก แžแŸ’แž„แŸƒ แž แžพแž™แž˜แžถแž“ standard deviation แŸฆแŸ แž“แžถแž‘แžธ แž แžพแž™แž€แžถแžšแžŸแžทแž€แŸ’แžŸแžถแž‘แŸ…แž›แžพแžŸแŸ†แžŽแžถแž€แž“แžทแžŸแŸ’แžŸแžทแžแž†แŸ’แž“แžถแŸ†แž‘แžธ แŸขCแž…แŸ†แž“แžฝแž“ แŸกแŸก แž“แžถแž€แŸ‹แž”แžถแž“แžšแž€แžƒแžพแž‰แžแžถแž“แžทแžŸแŸ’แžŸแžทแžแž”แžถแž“แž…แŸ†แžŽแžถแž™แž–แŸแž›แžŸแžทแž€แŸ’แžŸแžถแžšแž™แŸˆแž–แŸแž› แŸกแŸ แŸ แž“แžถแž‘แžธแž€แŸ’แž“แžปแž„แŸกแžแŸ’แž„แŸƒแž แžพแž™แž˜แžถแž“ standard deviation 20 แž“แžถแž‘แžธแŸ”แž‚แŸแž…แž„แŸ‹แž”แŸ’แžšแŸ€แž”แž’แŸ€แž”แžแžถแžแžพแž“แžทแžŸแŸ’แžŸแžทแžแž†แŸ’แž“แžถแŸ†แž‘แžธ แŸขA แž“แžทแž„ 2 B แž”แžถแž“แž…แŸ†แžŽแžถแž™แž–แŸแž›แžŸแžทแž€แŸ’แžŸแžถแžŸแŸ’แž˜แžพแžšแž‚แŸ’แž“แžถแžŠแŸ‚แžšแžฌแž‘แŸ แžแžพแž‚แŸแžแŸ’แžšแžผแžœแžŸแžšแžŸแŸแžš statistical hypothesis แž™แŸ‰แžถแž„แžŠแžผแž…แž˜แŸ’แžแŸแž…?

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