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The standard deviation is a statistic measuring the dispersion of a dataset relative to its mean and is calculated as the square root of the variance.

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7.5 The Variance and Standard Deviation - ppt download

Coefficient of Variation vs Standard Deviation

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Standard Deviation Formula and Uses vs. Variance

What Are The 5 Principal Risk Measures and How Do They Work

What Are The 5 Principal Risk Measures and How Do They Work