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Graphing Statistics & Data



A histogram is a graph that displays the classes on the horizontal axis and the frequencies of the classes on the vertical axis. The frequency of each class is represented by a vertical bar whose height is equal to the frequency of the class (when all the class widths are equal).
The exam scores of a group of students are given by the following table:
Construct the histogram.
Histograms with unequal class widths
The following table shows the distribution of the ages of people boarding buses at the bus station between 08:30 and 09:00 one morning:
Draw a histogram.
