Data was collected for 352 randomly selected 10 minute intervals. For each ten-minute interval, the number of people entering the atrium of a large mall were recorded. The data is summarized in the table below.
Number
of Guests Frequency
120 – 124 89
125 – 129 42
130 – 134 46
135 – 139 84
140 – 144 91
What is the class width for this GFDT?
Class width =
