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# 3 - Section AE TA Aneesh Hariharan Chapter 4 Review 1 A 41...

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Section: AE TA: Aneesh Hariharan Chapter 4 Review 1. A) 41+48+50+50+54+57 / 6 Average = 50 SD = Square root of ( (-9)^2+(-2)^2+(0)^2+(0)^2+(4)^2+(7)^2 / 6 ) = Square root of 150/6 = Square root of 25 SD = 5 B) 0.5 SD = 2.5 = 48, 50, 50 1.5 SD = 7.5 = 48, 50, 50, 54, 57 4. Income – Average The average would be higher because this function would have a long right hand tail. This means the majority of higher incomes come at a younger age. The older people with lower incomes are lowering the average. Schooling completed – Median For schooling completed the median would be higher because people at an older age could’ve finished more school than those younger. It would have a long left hand tail. 5. 80mm = unusually low This is because it 80mm is about 3.3 SD away from the average. 115mm = average This is because 115mm falls in the 1 st SD; it is about 0.1 SD away from the average. 120mm = average This is because 120mm also falls in the 1 st SD; it is about 0.4 SD away from the average. 210mm = unusually high This is because 210mm is about 8.5 SD away from the average.

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3 - Section AE TA Aneesh Hariharan Chapter 4 Review 1 A 41...

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