Chapter 1.2, Problem 63E

a.

To determine

To explain: The reason of splitting the stems.

Explanation of Solution

Given:

The stem and leaf plot:

  

The stems have been split because to explain the shape of the provided distribution. If the stems are not divided the most of the data would fall on some of the stems. So, get the information about the shape of the distribution the stems have been split.

b.

To determine

To explain: The key of the provided stem plot.

Explanation of Solution

Here, 16|0 implies that the 16% of residents of the states are of age between 25 to 34. Similarly, 11|44 implies that the 11.44 % of residents of the states are of age between 25 to 34.

c.

To determine

To describe: The shape of the provided distribution. Also, check if there any outlier exists in the distribution.

Answer to Problem 63E

The value 16.0 is an outlier.

Explanation of Solution

From the stem plot it could that curve of all leaves is approximately bell-shaped or symmetric. An outlier is also present in the distribution, that is, 16%