AP ICET 18th Sep 2021 Shift 2 Paper

Question : 194 of 200

Marks: +1, -0

If the standard deviation of

x_{1}, x_{2}, \......., x_{n}

is 3 , then the standard deviation of

3 x_{1}+7,3 x_{2}+7, \........, 3 x_{n}+7

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