The width of a class interval in a frequency distribution (or bar chart) will be approximately equal to the range of the data divided by the ______________ .
A)highest value in the data set
B)average of the data set
C)lowest value in the data set
D)number of class intervals

Question

Quizplus · Accepted Answer

The width of a class interval in a frequency distribution or bar chart is calculated by dividing the range of the data (the difference between the highest and lowest values) by the number of class intervals desired. This provides a uniform width for each class interval across the distribution.

The Width of a Class Interval in a Frequency Distribution