The following is a list of P/E ratios (current stock price divided by company's earnings per share) for companies.
57 53 50 46 42 35 31 56 52 49 45 30 30 30 55 55 55
Draw the histogram for these data using an initial class boundary of 29.5 and a class width of 6. Note that you can add or remove classes from the figure. Label each class with its endpoints.