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> ChatGPT punched out a reasonably sensible t test! I think the distribution is decidedly non normal here and the difference in the medians may well have also
by azalemeth 3y ago
> ChatGPT punched out a reasonably sensible t test!
I think the distribution is decidedly non normal here and the difference in the medians may well have also been of substantial interest -- I'd go for a Wilcox test here to first order... Or even some type of quantile regression. Honestly the famous Jonckheere–Terpstra test for ordered medians would be _perfect_ for this bit of pseudoanalysis -- have the hypothesis that M3 > M2 > M1 and you're good to go, right?!
(Disclaimers apply!)
- whimsicalism 3y ago12,000 builds? Sure maybe the build time distribution is non-normal, but the sample statistic probably is approximately normal with that many builds.
- RayVR 3y agoMany people misinterpret what is required for a t-test.
- azalemeth 3y agoI meant that the median is likely arguably the more relevant statistic, that is all -- I realise that the central limit theorem exists!
- whimsicalism 3y agoFair enough - I see what you are saying. Sorry for my accidentaly condescending reply.