Engineering Board Exam Reviewer · Mean, Variance, and Standard Deviation · hard

Find the population standard deviation of the first 10 natural numbers 1, 2, , 10.

  1. 3.03
  2. 8.25
  3. 5.5
  4. 2.87

Answer

D. 2.87

Solution

For 1,2, ,n: 2=n2-1/12=99/12=8.25. So =sqrt(8.25) 2.87.

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