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 263) asked you to make a histogram of these data.
| Length: | 1 | 2 | 3 | 4 | 5 |
| Percent: | 3.6 | 14.8 | 18.7 | 16.0 | 12.5 |
| Length: | 6 | 7 | 8 | 9 | 10 |
| Percent: | 8.2 | 8.1 | 5.9 | 4.4 | 3.6 |
| Length: | 11 | 12 | 13 | 14 | 15 |
| Percent: | 2.1 | 0.9 | 0.6 | 0.4 | 0.2 |
Find the five-number summary of the distribution of word lengths from this table.