A data set has a mean of 26 and consists of 5 numbers. If 4 of the numbers are 34, 23, 27, 23, what is the remaining number?

Correct answer

A. 23

Explanation

Sum of all 5 numbers = mean × count = 26 × 5 = 130. Sum of the known numbers = 107. Remaining number = 130 - 107 = 23.

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