# Example for simple linear regression
mod <- lm(dist ~ speed, data=cars)
confint_sigma2(object=mod, level=0.95)
confint_sigma2(object=mod, level=0.80)
# Example for multiple linear regression
mod <- lm(mpg ~ wt + hp, data=mtcars)
confint_sigma2(object=mod, level=0.95)
confint_sigma2(object=mod, level=0.80)
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