In the calculation of the arithmetic mean for grouped data, which value is used to represent all the values in a particular class?
A) The upper limit of the class
B) The lower limit of the class
C) The frequency of the class
D) The cumulative frequency preceding the class
E) The midpoint of the class

Question

Quizplus · Accepted Answer

The midpoint of the class is used to represent all the values in a particular class for the calculation of the arithmetic mean for grouped data. The midpoint is the average of the lower and upper class limits. Using the midpoint ensures that the calculation takes into account the range of values within the class, rather than just the upper or lower limit.

In the Calculation of the Arithmetic Mean for Grouped Data