Chapter 2 - Descriptive Statistics - Section 2.1 Frequency Distributions and Their Graphs - Exercises - Page 49: 13

class width = 15.625 lower class limits = 17, 32.625, 48.25, 63.875, 79.5, 95.125, 110.75, 126.375, upper class limits = 32.625, 48.25, 63.875, 79.5, 95.125, 110.75, 126.375, 141.875

Class width = (135-17)/8 lower class limits = min + class width for each class upper class limits = max - class width for each class