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Coefficient of variation = (………….)/("Mea...

Coefficient of variation = `(………….)/("Mean") xx 100 `

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what is variation?

Coefficient of variation of two distributions are 60 and 70 their standard deviations are 21 and 16, respectively . What are their arithmetic means.

Knowledge Check

  • Coefficient of variation of two distributions are 50 and 60, and their arithmetic means are 30 and 25 respectively. Difference of their standard deviation is ……

    A
    0
    B
    1
    C
    1.5
    D
    2.5

  • The value of coefficient of volume expansion of glycerin is 5 xx 10 ^(-4) K ^(-1). The fractional change in the density of glycerin for a rise of 40^(@)C in its temperature is .....

    A
    `0.025`
    B
    `0.010`
    C
    `0.015`
    D
    `0.020`

  • The value of coefficient of volume expansion of glycerin is 5 xx 10^(-4) K^(-1) . The fractional change in the density of glycerin for a rise of 40^@ C in its temperature is _____

    A
    `0.010`
    B
    `0.015`
    C
    `0.020`
    D
    `0.025`

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    A non-isotropic solid metal cube has coefficient of linear expansion as 5 xx 10^(-5)//""^(@)C along the x-axis and 5 xx 10^(-6)//""^(@)C along y-axis and z-axis. If the coefficient of volumetric expansion of the solid is n xx 10^(-6)//""^(@)C then the value of n is....

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