Get standard deviation for a distribution objects

The distribution objects represent one or more statistical distributions. The generic functions stddev() returns the standard deviation for these distributions.

stddev(x, ...)

# Default S3 method
stddev(x, ...)

# S3 method for class 'distribution'
stddev(x, ...)

Arguments

x

A distribution object, as from the {distributional} package.

...

Further arguments (not used yet).

Value

A numeric vector with one or more standard deviations.

Examples

library(distributional)
n1 <- dist_normal(mu = 1, sigma = 1.5)
n1
#> <distribution[1]>
#> [1] N(1, 2.2)
class(n1)
#> [1] "distribution" "vctrs_vctr"   "list"        
family(n1)
#> [1] "normal"
mean(n1)
#> [1] 1
variance(n1)
#> [1] 2.25
stddev(n1)
#> [1] 1.5