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] 0.7999,6.628   1.413,20.45    -0.989,11.02   -0.06321,28.82 0.9421,-1.484 
#>  [6] -0.5944,-2.263 0.7172,17.13   0.08513,-3.712 1.035,28.56    -1.847,41.64  
sd(x)
#> <rvec_dbl<2>[1]>
#> [1] 1.035,15.36