AMS 5 Study Guide - Quiz Guide: Current Population Survey (Us), Educational Testing Service, Brie
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AMS 5 Full Course Notes
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About 95% of the data lies within 2 sd from the average, 40. I. e. , about 95% of the data lies between 30 and 50 because 10 = 2sd in this case. The normal distribution is symmetric around the average, so about half of this data lies between 30 and 40 and half lies between 40 and 50. I. e. , about 47. 5% = 95%/2 of the data lies between 30 and 40. For approximately normally distributed data, about 68% lies between one sd below to one sd above average. So in this case, about 68% of the data lies between 35 and 45. See gure below: (3 pts) a di erent set of data has average y = 18, standard deviation sdy = 7 and the biggest value in the data is ymax = 24. Explain why or why not brie y, but precisely. This data does not have an (even approximately) normal distribution, because there is no data more than.
