Certain kinds of tumors tend to recur. The following data represent the lengths of time, in months, for a tumor to recur after chemotherapy.

22 59 18 29 54 39 14
12 19 18 17 1 21 46
25 49 50 1 43 39 5
9 38 45 54 59 46 50
19 36 38 40 43 50 41
25 19 39

For this problem, use five classes.
a. Find the class width.
b. Make a frequency table showing class limits, class boundaries, midpoints, frequencies, relative frequencies, and cumulative frequencies.