Consider the following data representing the price of refrigerators (in dollars): 1218, 1253, 1121, 1282, 1261, 1263, 1349, 1390, 1316, 1227, 1140, 1245, 1158, 1168, 1195, 1225, 1161, 1405, 1320, 1405, 1122. Step 1 of 7: Determine the class width of the classes listed in the frequency table. The classes provided are: 1108–1157, 1158–1207, 1208–1257, 1258–1307, 1308–1357, 1358–1407.

Answer

To determine the class width for a frequency table, you identify the difference between two consecutive lower class limits (or two consecutive upper class limits). Looking at the first two classes: Class 1 is 1108–1157 and Class 2 is 1158–1207. The lower class limit of the first class is 1108 and the lower class limit of the second class is 1158. Subtract the lower class limit of the first class from the lower class limit of the second class: 1158 - 1108 = 50. Alternatively, you can subtract consecutive upper class limits: 1207 - 1157 = 50. Therefore, the class width is 50.