In this example, the animals are listed on the left side of the graph (also called the y-axis), and the life span in years is listed on the bottom (the x-axis). You can organize the data in a histogra...In this example, the animals are listed on the left side of the graph (also called the y-axis), and the life span in years is listed on the bottom (the x-axis). You can organize the data in a histogram with the continuous data from 0 to 100, by using the intervals to 71 to 80, 81 to 90, and 91 to 100.