Exhibit 2-1 The Numbers of Hours Worked (Per Week)by 400 Statistics Students

Multiple Choice

Exhibit 2-1
The numbers of hours worked (per week) by 400 statistics students are shown below.

-Refer to Exhibit 2-1.The class width for this distribution

A) is 9
B) is 10
C) is 39,which is: the largest value minus the smallest value or 39 - 0 = 39
D) varies from class to class