Talk:Welch's t-test

Needs better task description

I haven't looked at the C code yet, but I'm assuming it's using t-test? The description should provide more context and explanations of concepts, and preferably links to algorithms. --Ledrug (talk) 20:16, 26 May 2015 (UTC)

Yes, this uses Welch's 2-sided t-test, as I commented inside the code.

Hi, you need to take all those nuggets out of your code comments and put them into an improved task description. The task description needs to stand on its own as a clear and concise description of what needs to be accomplished.

(P.S. Please sign your comments). --Paddy3118 (talk) 19:09, 27 May 2015 (UTC)

Hi Hailholyghost, I just had a look at the link you give and it is inadequate as a description for an RC task. The task description needs to be written for an audience of enthusiastic programmers - not necessarily maths or stats or whatever enthusiasts. It seems that you are new to RC and maybe you need to take time and lurk a bit more to understand a little more about how things are done.

This task needs a full description of the calculation method to use, probably in pseudocode, together with a decription of what the algorithm should be used for to complete a good task. The Code you give is not enough for a task description. --Paddy3118 (talk) 19:23, 27 May 2015 (UTC)

I added that link, as a pointer to the right direction for now. To be fair though, null hypothesis testing is very involved and sometimes borders black magic, so it may be difficult to explain everything clearly in a short text. The following wiki links may be relevant: wp:Statistical hypothesis testing, wp:ANOVA, and more specifically wp:Student's t-test and wp:Welch's t-test. The Student's t-test article has more details on actual computations, which forms the basis for the Welch's test. --Ledrug (talk) 19:44, 27 May 2015 (UTC)

So task description should perhaps also include explicit cautions about p values... Perhaps xkcd 882 and 1478? --Rdm (talk) 13:32, 3 June 2015 (UTC)