Talk:Welch's t-test: Difference between revisions
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: Another issue: according to [[wp:Welch's_t_test]] "<math>s_{1}^{2}</math> is [[wp:variance|sample variance]]" and you seem to be using the equations from there, but in your task description you currently instead say that "<math>s_n </math> is the [[wp:Variance#Population_variance_and_sample_variance|sample variance]] of set <math>n</math>" (Also, [[wp:Variance#Sample_variance|sample variance]] can be calculated in one of two ways - the expression you gave corresponds to what they label "unbiased sample variance" .. perhaps a minor issue? But I implemented what I think your task description has declared I should be calculating and I get a different result than the other task implementations, so I'm having to review all the basics...) --[[User:Rdm|Rdm]] ([[User talk:Rdm|talk]]) 06:03, 3 July 2015 (UTC)
:: I also noticed the unexplained nu1 and nu2 and the s instead of s^2. In addition in the sample variance formula I think the subscript on the mean should be lower case n. And the term p2-tail is unexplained. This means the same as p-value? —[[User:Sonia|Sonia]] ([[User talk:Sonia|talk]]) 00:07, 7 July 2015 (UTC)
== Task definition vs. Task implementation ==
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