Standard Deviations, Variances, and Coefficients of Variation Across Random Draws

Use standard deviations, variances, or coefficients of variation to summarise the distribution of random draws in an rvec.

Usage

draws_sd(x, na_rm = FALSE)

# S3 method for class 'rvec_chr'
draws_sd(x, na_rm = FALSE)

# S3 method for class 'rvec'
draws_sd(x, na_rm = FALSE)

draws_var(x, na_rm = FALSE)

# S3 method for class 'rvec_chr'
draws_var(x, na_rm = FALSE)

# S3 method for class 'rvec'
draws_var(x, na_rm = FALSE)

draws_cv(x, na_rm = FALSE)

# S3 method for class 'rvec_chr'
draws_cv(x, na_rm = FALSE)

# S3 method for class 'rvec'
draws_cv(x, na_rm = FALSE)

Arguments

x

An object of class rvec.

na_rm

Whether to remove NAs before calculating summaries. Default is FALSE.

Value

A vector.

Details

The coefficient of variation is the standard deviation divided by the mean.

See also

Apply pre-specified functions across draws:

• draws_all()

• draws_any()

• draws_mean()

• draws_median()

• draws_mode()

• draws_min()

• draws_max()

• draws_ci()

• draws_quantile()

Apply arbitrary function across draws:

• draws_fun()

Examples

m <- rbind(a = c(1, 1, 1, 2, 3),
           b = c(2, 4, 0, 2, 3),
           c = c(0, 0, 1, 0, 100))
x <- rvec(m)
x
#> <rvec_dbl<5>[3]>
#>            a            b            c 
#>   1 (1, 2.9) 2 (0.2, 3.9)    0 (0, 90) 
draws_sd(x)
#>          a          b          c 
#>  0.8944272  1.4832397 44.6116577 
draws_var(x)
#>      a      b      c 
#>    0.8    2.2 1990.2 
draws_cv(x)
#>         a         b         c 
#> 0.5590170 0.6741999 2.2084979