The sum of the relative frequencies for all classes in a histogram always equals
A)the number of classes.
B)the class width.
C)the total of all the frequencies.
D)one.

Question

Quizplus · Accepted Answer

The sum of the relative frequencies for all classes in a histogram always add up to one because relative frequency is defined as the proportion of observations in a particular class to the total number of observations. Therefore, all observations are accounted for and make up 100% of the data, meaning the sum of relative frequencies is equal to one.

The Sum of the Relative Frequencies for All Classes in a Histogram