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Mariulka [41]
3 years ago
15

Find the mean, variance, and standard deviation of the sample with

Mathematics
1 answer:
azamat3 years ago
6 0

Mean:-

\\ \tt\hookrightarrow \dfrac{\sum x}{n}=\dfrac{210}{10}=21

Standard Deviation:-

\\ \tt\hookrightarrow \sqrt{\dfrac{\sum x^2}{n}-(\sum x/n)^2}

\\ \tt\hookrightarrow \sqrt{\dfrac{5006}{10}-(21)^2}

\\ \tt\hookrightarrow \sqrt{500.6-441}

\\ \tt\hookrightarrow \sqrt{59.6}

\\ \tt\hookrightarrow 7.72

Variance:-

\\ \tt\hookrightarrow (S. D)^2=(7.72)^2=59.6

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