Confidence Interval for the residual standard deviation of a linear model

Compute a Confidence Interval

Usage

sigma_ci(x, alpha)

Arguments

x

An object of class lm

alpha

Value

A data.frame with 1 line and variables parameter, point_est, ll and hh.

References

See, for instance,

Examples

sigma_ci(lm(y ~ 1, data.frame(y = rnorm(1e3, sd = 2))), alpha = 0.05)
#>   parameter point_est       ll       hh
#> 1     sigma  2.017816 1.933092 2.110364