25. Below is a frequency distribution table of the number of naps that mothers give their children daily.

Number of naps f

4 1

3 8

2 15

1 8

0 8

a. What is the variable of interest?

b. What is the level of measurement of this variable?

c. What is the sample size (n)?

d. What is the most appropriate graph for this data?

e. Construct a graph of this data.