Question

the histogram to the right represents the weights (in pounds) of members of a certain high - school math team. what is the class width? what are the approximate lower and upper class limits of the first class? (simplify your answers.) what is the class width? the class width is 20 (simplify your answer.) what are the approximate lower and upper class limits of the first class? the approximate lower class limit is the approximate upper class limit is (simplify your answers.)

Explanation:

Step1: Identify class - width concept

Class width is the difference between consecutive lower - class limits. Looking at the histogram, consecutive lower - class limits are 100, 120, etc.
$120 - 100=20$

Step2: Determine lower and upper limits of first class

The first bar in the histogram starts at 100 (lower - class limit) and ends just before 120 (upper - class limit).

Answer:

The approximate lower class limit is 100.
The approximate upper class limit is 120.