Question

A histogram is being made for the following list of data. 78, 92, 98, 87, 86, 72, 92, 81, 86, 92 If the length of each interval is going to be 6, how many bars will there be on the histogram? 4 5 6 7

Answer 1

The maximum value is 98, and the minimum value is 72
Therefore, the range is 98-72 = 26 
The bars, 26/6
               = 4.33
               ≈ 5 (to accommodate all the values)
Thus the number of bars will be 5.