A data set has a mean of 22 and consists of 6 numbers. If 5 of the numbers are 7, 33, 8, 20, 20, what is the remaining number?

Correct answer

D. 44

Explanation

Sum of all 6 numbers = mean × count = 22 × 6 = 132. Sum of the known numbers = 88. Remaining number = 132 - 88 = 44.

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