contestada

What is the relationship between the variance and standard deviation? variance is the positive square root of the standard deviation?

Respuesta :

Variance of a continuous random variable X is defined as

[tex] \int\limits_D {(x-\mu)^2f(x)} \, dx [/tex]

Standard deviation is defined as

[tex] \sigma = \sqrt{Var(X)} [/tex]

Hence standard deviation is the positive square root of variance.

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