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Prove that the standard deviation calcul...

Prove that the standard deviation calculated from two values `x_(1)` and `x_(2)` of a vriable x is equal to half their difference.

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Knowledge Check

  • The standard deviation of 50 values of a vartiable x is 15 is each value of the vartiable is divided by (-3), then the standard deviation of the new set of 50 values of x will be-

    A
    15
    B
    `-5`
    C
    5
    D
    `-15`

  • The minimum value of f(x)=abs(x-1)+abs(x-2)+abs(x-3) is equal to

    A
    1
    B
    2
    C
    3
    D
    0

  • The value of lim_(x to 0) (1-3x)^((3)/(x)) is equal to -

    A
    `e^(6)`
    B
    `e^(-6)`
    C
    `e^(9)`
    D
    `e^(-9)`

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