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Railways PYQCBT 2 2017

RRB NTPC · Question 96

If the mean of distribution 10, 8, 15, 12, K, 25 is 12, find the value of K.

  1. 2

  2. 1

  3. 4

  4. 3

Show answer & explanation

Answer: (A) 2

Explanation

Mean 12 for 6 values means a total of 72. The known values add to 10 + 8 + 15 + 12 + 25 = 70, so K = 2.