In general,a frequency distribution should have at least eight class groups but no more than 20.

Question

Quizplus · Accepted Answer

There is no strict rule on the number of class groups in a frequency distribution. The number of classes depend on the data and the purpose of the analysis. However, having too few or too many classes may impact the accuracy and usefulness of the distribution. It is recommended to have between 5 and 20 classes, with 8-15 being the most common range.

In General,a Frequency Distribution Should Have at Least Eight Class