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If n∑i=1(xi−a) and n∑i=1(xi−a)2=na,(n,a>1) then the standard deviation of n observations x1,x2,⋯,xn is : |
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Answer» If n∑i=1(xi−a) and n∑i=1(xi−a)2=na,(n,a>1) then the standard deviation of n observations x1,x2,⋯,xn is : |
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