Statistical Ability If the data consisting of 25 observations x_1,x_2...x_25 is such that \sum^{25}_{i=1}(x_i+9)^2=175 and \sum^{25}_{i=1} (x_i+9)=75/2, then the standard deviation of the data is

AP ICET 11 Sep 2020 Shift 1 Paper

Question : 145 of 200

Marks: +1, -0

Statistical Ability

If the data consisting of 25 observations

x_1,x_2...x_25

is such that

∑↖{25}↙{i=1}(x_i+9)^2=175

and

∑↖{25}↙{i=1} (x_i+9)=75/2

, then the standard deviation of the data is

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