If X-is the mean of a set of N observations- then -X-X- 2 N-A- standard deviationB- mean deviationC- root mean deviationD- variance

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Variance and Standard Deviation

If X-is the m...

Question

If $¯ ¯ ¯ X$ is the mean of a set of N observations, then $\frac{\sum (X - ¯ ¯ ¯ X)^{2}}{N}$ = .

standard deviation

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mean deviation

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root mean deviation

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variance

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Similar questions

¯ X

\frac{\sum (X - ¯ X)^{2}}{N} = ?

If $μ$ is the mean of a distribution, then $\sum f_{i} (y_{i} - μ)$ is equal to

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x_{1}, x_{2}, x_{3}, . . . . . x_{n}

x_{1}, x_{2}, x_{3}, . . . . . . . . . . . . . . x_{n}

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n \sum i = 1 x_{i}^{2} = 400

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