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$Let x_{1}, x_{2}, x_{3}, x_{4} and x_{5} be the observations with mean m and standard deviation s . The standard deviation of the$
$observations k x_{1}, k x_{2}, k x_{3}, k x_{4} and k x_{5} is$

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detailed solution

Correct option is C

Here, m=Σxi5,s=Σxi25−Σxi52 For observations kx1,kx2,kx3,kx4,kx5,SD=k2Σxi25−kΣxi52 =k2Σxi25−k2Σxi52=kΣxi25−Σxi52=ks

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Let x1,x2,x3,x4 and x5 be the observations with mean m and standard deviation s . The standard deviation of the observations kx1,kx2,kx3,kx4 and kx5 is

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Ready to Test Your Skills?

free study material

$Let x_{1}, x_{2}, x_{3}, x_{4} and x_{5} be the observations with mean m and standard deviation s . The standard deviation of the$
$observations k x_{1}, k x_{2}, k x_{3}, k x_{4} and k x_{5} is$