12.20 The statistics of writing style. Here are data on the percentages of words of 1 to 15 letters used in articles in Popular Science magazine. Exercise 11.16 (page 261) asked you to make a histogram of these data. Length: 1 2 3 4 5 6 7 8 Percent: 3.6 14.8 18.7 16.0 12.5 8.2 8.1 5.9 Length: 9 10 11 12 : 13 14 15 Percent: 4.4 3.6 2.1 0.9 0.6 0.4 0.2 Find the five-number summary of the distribu- tion of word lengths from this table