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Question

Standard deviation for x1,x2,.....xn about mean can be expressed as 1nni=1(xi¯x)2.


A

True

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B

False

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Solution

The correct option is A

True


We know variance also expressed as σ2=1nni=1(xi¯x)2 we call standard deviation as the square roof of variance (σ2). Therefore σ=1nni=1(xi¯x)2.


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