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Answer:
Step-by-step 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
Next, is to write out the frequency of $25 up to $35 class
Divide this frequency by the total frequency; This gives the relative frequency
Hence;
Option D answers the question