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Railways PYQCBT 1 2016

RRB NTPC · Question 6

What is the mean of the following distribution? 21, 23, 43, 65, 76, 23, 98, 34, 62, 89 A. 51.4 B. 53.4 C. 58.7 D. 55.3

  1. A

  2. D

  3. B

  4. C

Show answer & explanation

Answer: (C) B

Explanation

Sum = 21 + 23 + 43 + 65 + 76 + 23 + 98 + 34 + 62 + 89 = 534. Mean = 534/10 = 53.4.