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Unformatted text preview: 3 Example 4 x min 1stQ median 3rdQ max mean 32.29, 1.66, 0.51, 0.79, 0.98, 0.99, 1.11, 1.142.290.03 0.89 1.02 1.14 0.20 Notes: • sample distribution is lefttailed • mean < median • When R draws histograms, it uses the ﬁve number summary, where the upper/lower hinges are obtained as the median of the observations above/below the median. This is more complicated than simply using the 1st and 3rd quartile. Using the quartiles is ﬁne for this class. The 1st and 3rd quartiles are given in the box plot in parentheses. • The tail that’s heavy will either have a longer whisker or an outlier(s). 4 Example 5 x min 1stQ median 3rdQ max mean 10.37, 0.09, 0.21, 0.26, 0.59, 0.59, 0.74, 1.690.37 0.18 0.43 0.63 1.69 0.47 Notes: • sample distribution is righttailed • mean > median • one outlier • upper whisker is the maximum with outliers skipped 5...
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 Spring '08
 Boik,J
 Histograms, Quartile, Sample Distribution, min 3

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