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For a frequency distribution, mean devia...

For a frequency distribution, mean deviation about mean is computed by

A

M.D.=`(Sigmaf)/(Sigmaf|d|)`

B

M.D.=`(Sigmad)/(Sigmaf)`

C

M.D.=`(Sigmafd)/(Sigmaf)`

D

`(Sigmaf|d|)/(Sigmaf)`

Text Solution

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The correct Answer is:
D
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Knowledge Check

  • For a frequency distribution mean deviation from mean is computed by -

    A
    `M.D.=(Sigmaf)/(Sigmaf|d|)`
    B
    `M.D.=(Sigmad)/(Sigmaf)`
    C
    `M.D.=(Sigmafd)/(Sigmaf)`
    D
    `M.D.=(Sigmaf|d|)/(Sigmaf)`

  • For a frequency distribution, standard deviation is computed by applying the formula

    A
    `sigma=sqrt((Sigmafd^2)/(Sigmaf)-((Sigmafd)/(Sigmaf))^2`
    B
    `sigma=sqrt(((Sigmafd)/(Sigmaf))^2-(Sigmafd^2)/(Sigmaf))`
    C
    `sigma=sqrt((Sigmafd^2)/(Sigmaf)-(Sigmafd)/(Sigmaf))`
    D
    `sigma=sqrt(((Sigmafd)/(Sigmaf))^2-(Sigmafd^2)/(Sigmaf))`

  • The mean deviation from median is

    A
    greater then that measured from any other value
    B
    less than that measured from any other value
    C
    equal to that measured from any other value
    D
    maximum if all observations are positive

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