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OpenStax, Statistics §2.6 Skewness and the Mean, Median, and Mode · Example 1 · Statistics · Describing data

Skewness and the Mean, Median, and Mode · Example 1

Statistics are used to compare and sometimes identify authors. The following lists show a simple random sample that compares the letter counts for three authors.
Terry: 7, 9, 3, 3, 3, 4, 1, 3, 2, 2
Davis: 3, 3, 3, 4, 1, 4, 3, 2, 3, 1
Maris: 2, 3, 4, 4, 4, 6, 6, 6, 8, 3

(a) Make a dot plot for the three authors and compare the shapes.
(b) Calculate the mean for each.
(c) Calculate the median for each.
(d) Describe any pattern you notice between the shape and the measures of center.

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OpenStax, Statistics · §2.6 Skewness and the Mean, Median, and Mode · Example 1

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