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] 1.011,10.56    0.991,-15.2    -0.5865,-24.91 0.7159,39.76   -0.7564,6.647 
#>  [6] -1.394,4.589   -2.011,6.924   -0.2756,-25.37 -0.5383,31.65  -0.2338,-10.82
sd(x)
#> <rvec_dbl<2>[1]>
#> [1] 0.9941,22.02