Question

the histogram to the right represents the weights (in pounds) of members of a certain high - school debate team. how many team members are included in the histogram?

Explanation:

Step1: Identify frequencies for each class

The frequencies for the weight - classes are: For the class 105 - 115, the frequency is 4; for 115 - 125, the frequency is 1; for 125 - 135, the frequency is 5; for 135 - 145, the frequency is 4; for 145 - 155, the frequency is 2; for 155 - 165, the frequency is 5.

Step2: Sum up the frequencies

$4 + 1+5 + 4+2 + 5$
$= (4 + 1)+5+(4 + 2)+5$
$= 5+5 + 6+5$
$=10 + 6+5$
$=16 + 5$
$= 21$

Answer:

21