Standard Deviation, Including Rvecs

Calculate standard deviation of x, where x can be an rvec. If x is an rvec, separate standard deviations are calculated for each draw.

Usage

sd(x, na.rm = FALSE)

Arguments

x

A numeric vector or R object, including an rvec().

na.rm

Whether to remove NAs before calculating standard deviations.

Value

An rvec, if x is an rvec. Otherwise typically a numeric vector.

Details

To enable different behavior for rvecs and for ordinary vectors, the base R function stats::sd() is turned into a generic, with stats::sd() as the default.

For details on the calculations, see the documentation for stats::sd().

See also

var()

Examples

x <- rvec(cbind(rnorm(10), rnorm(10, sd = 20)))
x
#> <rvec_dbl<2>[10]>
#>  [1] 1.514,-35.39  0.2274,-20.74 -0.5177,31.07 -0.3688,7.23  -2.663,-1.427
#>  [6] -1.014,17.94  0.3911,23.47  -1.368,7.938  1.223,6.036   0.2707,5.42  
sd(x)
#> <rvec_dbl<2>[1]>
#> [1] 1.244,19.81