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Unformatted text preview: our data should be between 5.0262 and 7.6881. b) median = 6.2, IQR = 0.85 c) coefficient of variation = sd/mean = 0.10468 d) mean = 6.78571, st. dev. = 1.66476, median = 6.2, IQR = 0.85, most of the data should be between 3.45619 and 10.11524; median & IQR are resistant to the change, mean & sd are not resistant 4 1.5 a) median = 30, Q1 = 23.5, Q3 = 46.5 b) IQR = 23 c) 1.6 a) median = 38 b) Q1 = 36, Q3 = 41 c) d) Within 1 SD of the mean corresponds to the interval [35.25, 41.65], meaning the numbers 36 through 41 fall in the range. There are 11 + 12 + 18 + 13 + 10 + 15 = 79 of them, meaning 79/119 = 66.4% of the observations are within 1 SD of the mean....
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 Spring '11
 Christou

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