The following table presents the number of hours a sample of 40 subscribers listened to Pandora Radio in a given week.

a. Construct a frequency distribution with approximately eleven classes.

b. Construct a frequency histogram from this frequency distribution.

c. Construct a relative frequency distribution the same classes.

d. Construct a relative frequency histogram from this relative frequency distribution.

e. Are the histograms skewed to the left, skewed to the right, or approximately symmetric?

f. Construct a frequency distribution with approximately four classes.
g. Repeat parts (b)–(d), using the frequency distribution constructed in part (f).
h. Do you think that four and eleven classes are both reasonably good choices for these data, or do you think that one choice is much better than the other? Explain your reasoning.

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52 18 2 20 9 9 11 6 18 ++ 4 12 9 16 10 37 15 18 88 6 23 4 3 17 19 12 20 11 14 10 37 21 36 17 3 23 28 19 20 29 12