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

-Refer to Exhibit 2-1.The midpoint of the last class is
A)50
B)34
C)35
D)34.5

Question

Exhibit 2-1
The numbers of hours worked (per week)by 400 statistics students are shown below.
 
-Refer to Exhibit 2-1.The midpoint of the last class is
A)50 
B)34 
C)35 
D)34.5

Quizplus · Accepted Answer

To find the midpoint of a class, we add the lower class limit and upper class limit and divide by 2. The last class in the data is "40-50". The lower limit is 40 and the upper limit is 50. Adding these two and dividing by 2, we get 45/2 = 22.5. Therefore, the midpoint of the last class is 34.5.

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