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User talk:Hailholyghost: Difference between revisions
→Welch's t-test
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::[[User:Eoraptor|Eoraptor]] ([[User talk:Eoraptor|talk]]) 13:13, 8 December 2017 (UTC)
:::For instance, the R implementation uses a port of [https://dl.acm.org/citation.cfm?id=131776 TOMS 708] from the ACM. The original code is [http://calgo.acm.org/708.gz here]. Notice that, as usual with special functions, there are calls to different methods according the the values of the arguments. There are reasons not to reimplement this from scratch: it requires much research work to prove a given algorithm is correct, to find necessary coefficients with enough precision, and to get a correct and efficient implementation. Here you are not even trying to investigate the convergence of the integral, and it's an inefficient way to find an accurate answer. [[User:Eoraptor|Eoraptor]] ([[User talk:Eoraptor|talk]]) 13:30, 8 December 2017 (UTC)
"You will need at least the incomplete beta function" you are contradicting yourself. The Welch's t-test requires no integration. It took me a long time to implement this in portable GNU99 C, which wouldn't require library installations. This was a particularly daunting task, because I couldn't install the libraries- they were useless. I thought the world could benefit from my work. If you have some better way of doing this, fine, re-write the C code to implement the algorithms you mention.
Nonetheless, I don't see how to alter the title of the page. It appears that this page is stuck with a wrong title.
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