Chapter 3.2, Problem 21E

The percentage of teens not in school or working in 2010 for the 50 states were given in the 2012 Kids Count Data Book (aecf.org) and are shown in the following table:

Note that the percentages range from a low of 4% to a high of 15%. In constructing a stem-and-leaf display for these data, if we regard each percentage as a two-digit number and use the first digit for the stem, then there are only two possible stems, 0 and 1. One solution is to use repeated stems. Consider a scheme that divides the leaf range into five parts: 0 and 1, 2 and 3, 4 and 5, 6 and 7, and 8 and 9. Then, for example, stem O could be repeated as

Construct a stem-and-leaf display for this data set that uses stems 0t， 0f，0s，0*， and 1, 1t, and 1f. Comment on the important features of the display. (Hint: See Example 3.10.)