Question

1. the following frequency distribution was obtained. class boundaries frequencies 17.5 - 22.5 5 22.5 - 27.5 7 27.5 - 32.5 10 32.5 - 37.5 12 37.5 - 42.5 13 how many pieces of data were less than 37.5? a. 12 b. 13 c. 22 d. 34

Explanation:

Step1: Identify relevant classes

We need to consider classes with upper - bound less than 37.5, which are 17.5 - 22.5, 22.5 - 27.5, 27.5 - 32.5 and 32.5 - 37.5.

Step2: Sum up frequencies

Sum the frequencies of these classes: \(5 + 7+10 + 12\).
\[5+7 + 10+12=34\]

Answer:

D. 34