A data set has a mean of 16 and consists of 4 numbers. If 3 of the numbers are 6, 13, 12, what is the remaining number?

Correct answer

B. 33

Explanation

Sum of all 4 numbers = mean × count = 16 × 4 = 64. Sum of the known numbers = 31. Remaining number = 64 - 31 = 33.

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