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Use the frequency histogram to answer each question.
(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.
frequency
(a) There are _ classes.
(b) The least frequency is about _.
(c) The greatest frequency is about _
(d) The class width is _