If the range of a distribution were 89 and the data were reported as whole numbers, what would the width of the class interval be if one chose to group the distribution into approximately 14 class intervals?
A) 14
B) 89
C) 5
D) 6
E) 7

Question

Quizplus · Accepted Answer

To find the width of the class interval, divide the range by the number of intervals:

width = range/number of intervals

width = 89/14

width ≈ 6.36

Since the data are reported as whole numbers, we should round up to the nearest whole number for ease of use:

width ≈ 7

Therefore, the best choice is D, with a width of 7.

If the Range of a Distribution Were 89 and the Data