If {\x}_1, {\x}_2, \cdots {\x}_{10} are marks obtained by a student such that \sum_{{i=1}}^{{10}} x_i=90 and \sum_{{i=1}}^{{10}} x_i^2=900 , then the variance of this data is

AP ICET 25 July 2022 Shift 1 Solved Paper

Question : 195 of 200

Marks: +1, -0

{\x}_1, {\x}_2, ⋯ {\x}_{10}

are marks obtained by a student such that

∑↙{{i=1}}↖{{10}} x_i=90

and

∑↙{{i=1}}↖{{10}} x_i^2=900

, then the variance of this data is

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