Four different populations consist of numbers as given in A-D below: Compute…

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Four different populations consist of numbers as given in A-D below: Compute the variance of each different population and arrange in descending order.

A. 6, 15, 27, 33, 39

B. 1, 2, 3, 4, 5, 6, 7

C. 10, 16, 10, 16, 10, 10, 16, 16

D. 10, 15, 10, 15

  1. A.

    D, B, A, C

  2. B.

    A, C, D, B

  3. C.

    B, D, C, A

  4. D.

    C, A, B, D

Attempted by 2 students.

Show answer & explanation

Correct answer: B

Calculate the population variance (σ²) for each set using σ² = Σ(x - μ)² / N.

Set A: Mean = 24, Variance = 144. Set B: Mean = 4, Variance = 4.

Set C: Mean = 12, Variance = 10. Set D: Mean = 12.5, Variance = 6.25.

Arranging in descending order: A (144) > C (10) > D (6.25) > B (4).

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