Confidence interval for variance (standard deviation) of a sample

Source: R/ci_chisq.R

Calculates the confidence interval for the variance (standard deviation) of a sample (ChiSquare distribution).

ci_chisq(s, n, conf.level = 0.95, digits = 2)

Arguments

s

Sample standard deviation
n

Sample size
conf.level

Confidence level to use for the confidence interval (Default is 0.95)
digits

Number of digits to round to (Default is 2)

Value

A tibble with the standard deviation and variance, degrees of freedom, and lower and upper ends of the confidence interval

Examples

s <- 0.535
n <- 10
ci_chisq(s, n)

#> # A tibble: 2 × 5
#>   stat  value    df lower upper
#>   <chr> <dbl> <dbl> <dbl> <dbl>
#> 1 sd     0.54     9  0.37  0.98
#> 2 var    0.29     9  0.14  0.95