Question

Refer to the following distribution:Cost of Textbooks Frequency $25 up to $35 2 S35 up to $45 5$45 up to $55 7$55 up to $65 20 S65 up to $75 16What is the relative class frequency for the $25 up to $35 class? A) 0.10 B) 0.05 C) 0.02 D) 0.04

Answer 1

`Relative\ Frequency = 0.04`

Explanation:

Given

Cost of Textbooks ---- Frequency

$25 up to $35 ----- 2

$35 up to $45 ------- 5

$45 up to $55 ------- 7

$55 up to $65 ------ 20

$65 up to $75 ---- -- 16

Required

Determine the relative class frequency for the $25 up to $35 class

First, we need to get the total frequency

`Total = 2 + 5 + 7 + 20 + 16`

`Total = 50`

Next, is to write out the frequency of $25 up to $35 class

`Frequency = 2`

Divide this frequency by the total frequency; This gives the relative frequency

`Relative\ Frequency = (Frequency)/(Total)`

`Relative\ Frequency = (2)/(50)`

`Relative\ Frequency = 0.04`

Hence;

Option D answers the question