When constructing a frequency distribution, the number of class intervals, in general, should be________.
A) more than 20.
B) about 10.
C) only 2.
D) the same as the number of cases.

Question

Quizplus · Accepted Answer

The number of class intervals should be about 10, as too few intervals may oversimplify the data and too many may make the distribution difficult to interpret.

When Constructing a Frequency Distribution, the Number of Class Intervals