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Question 34Asked in RRB JE CBT-1, 20 Feb 2026, Shift 1 (9:00 AM)

Standard deviation of 10, 12, 9, 8, 21 is (correct to two decimals):

  1. A4.59
  2. B4.79
  3. C4.89
  4. D4.69
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Correct answer: (D) 4.69

From RRB JE CBT-1 PYQ 20 Feb 2026, Shift 1 (9:00 AM)

This is question 34 of RRB JE CBT-1 PYQ 20 Feb 2026, Shift 1 (9:00 AM). See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.