Histograms for grouped data
Here are the shopping times (in minutes) for a sample of 18 shoppers at a particular grocery store:
26, 23, 44, 41, 38, 35, 31, 28, 25, 22, 31, 31, 27, 27, 24, 24, 21, 21 Draw the histogram for these data using an initial class boundary of 20.5, an ending class boundary of 45.5, and 5 classes of equal width. Note that you can add or remove classes from the figure. Label each class with its endpoints.