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The standard deviation and mean of a dat...

The standard deviation and mean of a data are 6.5 and 12.5 respectively. Find the coefficient of variation.

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Knowledge Check

  • If the mean and standard deviation of a data are 8 and 2 respectively then the co-efficient of variation is ___.

    A
    0.16
    B
    0.25
    C
    0.52
    D
    0.61

  • Mean and standard deviation of a data are 48 and 12 respectively. The coefficient of variation is .............

    A
    `42`
    B
    `25`
    C
    `28`
    D
    `48`

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    The mean and standard deviation of 15 observations are found to be 10 and 5 respectively. On reachecking it was found that one of the observation with value 8 was incorrect. Calculate the correct mean and standard deviation if the correct observation value was 23 ?

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    The mean and standard deviation of 20 items are found to be 10 and 2 respectively. At the time of checking it was found that an item 12 was wrongly entered as 8 . Calcualte the correct mean and standard deviation.

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