Tracking developer build times to decide if the M3 MacBook is worth upgrading

Re:Tracking developer build times to decide if the M3 MacBoo... by azalemeth on Friday December 29, 2023 @08:19PM (#38812042)

> 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!)

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Re:Tracking developer build times to decide if the M3 MacBoo... by whimsicalism on Friday December 29, 2023 @08:39PM (#38812138)

12,000 builds? Sure maybe the build time distribution is non-normal, but the sample statistic probably is approximately normal with that many builds.

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Re:Tracking developer build times to decide if the M3 MacBoo... by RayVR on Friday December 29, 2023 @08:44PM (#38812176)

Many people misinterpret what is required for a t-test.

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Re:Tracking developer build times to decide if the M3 MacBoo... by azalemeth on Saturday December 30, 2023 @05:55AM (#38814259)

I meant that the median is likely arguably the more relevant statistic, that is all -- I realise that the central limit theorem exists!

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Re:Tracking developer build times to decide if the M3 MacBoo... by whimsicalism on Monday January 01, 2024 @12:43PM (#38833578)

Fair enough - I see what you are saying. Sorry for my accidentaly condescending reply.

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