The monthly salaries of a sample of 100 employees were rounded to the nearest ten dollars. They ranged from a low of $1,040 to a high of $1,720. If we want to condense the data into seven classes, what is the most convenient class interval?
A) $50
B) $100
C) $150
D) $200
E) None of the choices are correct

Question

Quizplus · Accepted Answer

The range of the data is $1,720 - $1,040 = $680. Dividing this range by 7 classes gives approximately $97.14, so the most convenient class interval is $100.

The Monthly Salaries of a Sample of 100 Employees Were