âWhat Teachers Should Know about the Bootstrap: Resampling in the Undergraduate Statistics Curriculumâ, 2014-11-19 (; similar)â :
I have 3 goals in this article:
To show the enormous potential of bootstrapping and permutation tests to help students understand statistical concepts including sampling distributions, standard errors, bias, confidence intervals, null distributions, and p-values.
To dig deeper, understand why these methods work and when they donât, things to watch out for, and how to deal with these issues when teaching.
To change statistical practiceâby comparing these methods to common t-tests and intervals, we see how inaccurate the latter are; we confirm this with asymptotics. n â„ 30 isnât enoughâthink n â„ 5000. Resampling provides diagnostics, and more accurate alternatives. Sadly, the common bootstrap percentile interval badly under-covers in small samples; there are better alternatives. The tone is informal, with a few stories and jokes.