Question: In Exercises 20, use the frequency histogram to (a) Determine the number of classes. (b) Estimate the frequency of the class with the least frequency.

In Exercises 20, use the frequency histogram to
(a) Determine the number of classes.
(b) Estimate the frequency of the class with the least frequency.
(c) Estimate the frequency of the class with the greatest frequency.
(d) Determine the class width.
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