A data set has a mean of 17 and consists of 6 numbers. If 5 of the numbers are 26, 16, 8, 31, 7, what is the remaining number?

Correct answer

A. 14

Explanation

Sum of all 6 numbers = mean × count = 17 × 6 = 102. Sum of the known numbers = 88. Remaining number = 102 - 88 = 14.

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