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Railways PYQCBT 1 2016

RRB NTPC · Question 40

What is the mean of the marks scored by students in a science exam? 41, 39, 52, 48, 54, 62, 46, 52, 40, 96, 42, 40, 98, 60, 52 A. 54.8 B. 58.4 C. 53.4 D. 53.8

  1. C

  2. B

  3. D

  4. A

Show answer & explanation

Answer: (D) A

Explanation

The sum of the 15 marks is 41 + 39 + 52 + 48 + 54 + 62 + 46 + 52 + 40 + 96 + 42 + 40 + 98 + 60 + 52 = 822. Mean = 822 ÷ 15 = 54.8.