AP ICET 25 July 2022 Shift 2 Solved Paper

Question : 196 of 200

Marks: +1, -0

x_1, x_2, . . ., x_{20}

are observations in a data whose mean is

4

and variance is

9

, then

∑↙{{i=1}}↖{{20}} x_i (x_i+1) =

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