Chapter 2

For example, let us count the number of observations belonging to the 60 - 119 class. Six values of 60, 62, 75, 85, 90, and 110 belong to the class of 60 - 119. Thus, the frequency of this class is 6. Since we want to develop classes of equal width, the last class width is from 300 to 359. THE FREQUENCY DISTRIBUTION OF WAITING TIMES ................
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