Unformatted text preview: one point, 82, that is greater than 44 36 80. Therefore 82 is the only outlier. 13. The figure on the left is a sketch of separate histograms for each group. The histogram on the right is a sketch of a histogram for the two groups combined. There is more spread in the combined histogram than in either of the separate ones. Therefore the standard deviation of all 200 heights is greater than 2.5 in. The answer is (ii). 15. (a) IQR = 3rd quartile 1st quartile. A: IQR = 6 02 1 42 4 60, B: IQR = 9 13 5 27 3 86...
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 Fall '11
 MattGilg
 Statistics, Histograms, Interquartile range, ﬁrst quartile

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