Multiple Choice Questions on Given that the arithmetic mean and standard deviation of a sample of 15 observations are 24 and 0 re........... for NDA Exam Preparation

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Multiple Choice Questions

Given that the arithmetic mean and standard deviation of a sample of 15 observations are 24 and 0 re...........

Mathematics (NDA) Statistics
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    Given that the arithmetic mean and standard deviation of a sample of 15 observations are 24 and 0 respectively. Then which one of the following is the arithmetic mean of the smallest five observations in the data?

    0

    Incorrect Answer

    8

    Incorrect Answer

    16

    Incorrect Answer

    24

    Correct Answer
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    Explanation:

    A.M = 24, S.D = 0

    As S.D = 0, therefore average of any 5 observations will be equal to A.M. 

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