Here are the shopping times (in minutes) for a sample of 16 shoppers at a particular grocery store:
26, 23, 44, 41, 38, 35, 31, 28, 25, 22, 34, 34, 34, 31, 31, 27
Draw the frequency polygon for these data using an initial class boundary of 21.5, an ending class boundary of 46.5 and 5 classes of equal width. Note that you can add or remove classes from the figure. Label each class with its midpoint.
