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Railways PYQCBT 1 2016

RRB NTPC · Question 87

If the standard deviation of a population is 10, what would be the population variance? A. 100 B. 30 C. 5 D. 20

  1. D

  2. B

  3. A

  4. C

Show answer & explanation

Answer: (C) A

Explanation

Variance is the square of the standard deviation: 10² = 100.