Refer to the following wage breakdown for a garment factory. What is the class interval for the table of wages above?
A)$2
B)$3
C)$4
D)$5

Question

Refer to the following wage breakdown for a garment factory.  What is the class interval for the table of wages above?
A)$2 
B)$3 
C)$4 
D)$5

Quizplus · Accepted Answer

To find the class interval, we need to subtract the lowest value from the highest value and divide by the number of classes. In this case, the lowest value is 5 and the highest value is 34. There are 10 classes. 
Interval = (34-5)/10
Interval = 2.9 which is closest to $3. Therefore, the class interval is $3. Choice B is the correct answer.

Refer to the Following Wage Breakdown for a Garment Factory