New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    If the standard deviation of a population is 4.5, what

    would be the population variance?
    A 20.25 Correct Answer Incorrect Answer
    B 20 Correct Answer Incorrect Answer
    C 9 Correct Answer Incorrect Answer
    D 18 Correct Answer Incorrect Answer

    Solution

    Given standard deviation σ = 4.5 We know that variance is the square of the standard deviation .. Variance = (standard deviation)² = (σ)² = 4.52 = 20.25

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