PRC-2 · Chapter 7 · Question 48 of 60
What mathematical procedure is used to calculate the 'class mark' (mid-point) of a specific frequency distribution class?
Test yourself: pick an answer
Reveal answer & explanation
Correct answer: B) Adding the upper and lower limits and dividing by two.
Explanation
The class mark, or mid-point, represents the exact center of a class interval and is calculated by adding the lower class limit to the upper class limit and strictly dividing the sum by 2.
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