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[" If "sum_(i=1)^(9)(x_(i)-5)=9" and "sum_(i=1)^(9)(x_(i)-5)^(2)=45'" then "],[" the standard deviation of the "9" items "x_(1),x_(2),],[...,x_(9)" is "]

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If sum_(i=1)^(9) (x_(i)-5) " and" sum__(i=1)^(9) (x_(i)-5)^(2)=45 , then the standard deviation of the 9 items x_(1),x_(2),..,x_(9) is

If sum_(i=1)^(9)(x_(i)-5)=9andsum_(i=1)^(9)(x_(i)-5)^(2)=45 , then the standard deviation of the 9 items x_(1),x_(2),......,x_(9) is

If sum _(i=1) ^(9) (x _(i) - 5) = 9 and sum_(i =1) ^(9) (x _(i) - 5) ^(2) = 45, then the standard deviation of the 9 terms x _(1), x _(2),....,x _(9) is

If sum_(i=1)^(18)(x_(i)-8)=9 and sum_(i=1)^(18)(x_(i)-8)^(2)=45 then find the standard deviation of x_1 , x_2, ....,x_(18)

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If sum_(i=1)^(5) (x_(i) - 6) = 5 and sum_(i=1)^(5)(x_(i)-6)^(2) = 25 , then the standard deviation of observations

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