Question

In the frequency distribution from Section 1.2 Exercise #2 in the text, what is the class midpoint for the class "30-39"?

A) 29.5
B) 30
C) 34.5
D) 39

Answer 1

The class midpoint for the class "30-39" is found by averaging the lower and upper limits of the class, yielding 34.5 as the midpoint. Therefore, the correct answer is:C) 34.5

Step-by-step explanation:

In order to find the class midpoint for the class "30-39," we take the lower limit of the class, which is 30, and the upper limit of the class, which is 39, and calculate the midpoint by taking the average of these two values. This is done by summing the lower and upper limits and then dividing by 2. The calculation is as follows: (30 + 39) / 2 = 69 / 2 = 34.5. Hence, the correct answer is C) 34.5, which is the class midpoint for the class "30-39" in a frequency distribution.