Question

Find the standard deviation for the given data. Round your answer to the nearest tenth.

3,7,11

Answer 1

Hello Sir/ Mam

YOUR REQUIRED ANSWER : S.D. = 3.266

Given data:3,7,11

	X	(X-Mean)^2
	3	16
	7	0
	11	16
Mean	7
Total		32

Hence,

$S.D. = \sqrt{\frac{\sum(X-\mu )^2}{n}}=\sqrt{\frac{32}{3}}=3.2660$

I hope this solves your doubt.

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