Statisticseasy · Past Paper
What is the formula for the class mark of a class interval?
AUpper limit - Lower limit
B(Upper limit + Lower limit) / 2
CUpper limit + Lower limit
DLower limit + (Frequency / 2)
✓ Correct Answer: B — (Upper limit + Lower limit) / 2
The class mark is the midpoint of the class, calculated as the average of the upper and lower limits.
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