Standard deviation from a variance

sigma_X = sqrt(Var(X)).

Usage

SdFromVar(var_x)

Arguments

var_x

a variance, >= 0.

Value

list(variance, sd).

References

Morin, D. J. (2016). Probability: For the Enthusiastic Beginner. Createspace. Eq (3.39).

Examples

SdFromVar(9)$sd
#> [1] 3