Welch T Test Calculator (Unequal Variances)
Welch T Test Calculator (Unequal Variances): a planned Super Calculator tool. Stub page: the tool, its formula and a worked example are not published yet.
Welch T Test Calculator (Unequal Variances) is a planned calculator in the mathematics section of Super Calculator, covering statistics and probability.
What this calculator will compute
Inputs: mean and standard deviation and n for each group, alpha and tail selection.
Outputs: t statistic, Welch df (non-integer), p value and confidence interval for the difference.
Formula, recorded as scope and not yet verified against a primary source: t = (xbar1 - xbar2) / sqrt(s1^2/n1 + s2^2/n2) with Welch-Satterthwaite degrees of freedom df = (s1^2/n1 + s2^2/n2)^2 / ((s1^2/n1)^2/(n1-1) + (s2^2/n2)^2/(n2-1)).
Status
This page is a stub. The calculator is not built, no figure on this page has been verified against the authority that sets it, and nothing here should be used to make a decision. The page exists so that the site structure is complete and so that articles can link this concept on first mention.
The stub carries noindex, nofollow and is excluded from the sitemap.