A data set has a mean of 25 and consists of 4 numbers. If 3 of the numbers are 9, 33, 26, what is the remaining number?

Correct answer

B. 32

Explanation

Sum of all 4 numbers = mean × count = 25 × 4 = 100. Sum of the known numbers = 68. Remaining number = 100 - 68 = 32.

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