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    Question

    In a normally distributed population, number of

    observation faling within the range Mean ± S.D. is approximately __________%
    A 10 Correct Answer Incorrect Answer
    B 32 Correct Answer Incorrect Answer
    C 68 Correct Answer Incorrect Answer
    D 95 Correct Answer Incorrect Answer

    Solution

    In a normal distribution, approximately 68% of observations fall within one standard deviation of the mean, reflecting the central tendency of the data distribution.

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