ggplot's has a built in interval for lm that I'm aware of, but there are essentially statistical interval toolkits that you can supply yourself. This lib is a h

ggplot's has a built in interval for lm that I'm aware of, but there are essentially statistical interval toolkits that you can supply yourself. This lib is a handful of implementations. Bayesian stats has "credible intrrvals." These are different than those from relative likelihood and those from Frequentist methods. ggplot's built-in scratch the surface but are still really handy and easy to extend.