Revision as of 20:09, 6 July 2015 (view source) Rdm (talk \| contribs) (J draft) ← Older edit		Revision as of 20:11, 6 July 2015 (view source) Rdm (talk \| contribs) m (J: better name for ssem) Newer edit →
Line 173: nu=: # - 1: sampvar=: +/@((- mean) ^ 2:) % nu ~~ssem2~~ssem=: sampvar % # welch_T=: -&mean % 2 %: +&~~ssem2~~ssem nu=: nu f. : ((+&~~ssem2~~ssem ^ 2:) % +&((~~ssem2~~ssem^2:)%nu)) B=: ^@(+&lngamma - lngamma@+) Line 197: sampvar is sample variance (or: standard deviation squared) ~~ssem2~~ssem is squared standard error of the mean Data for task examples:

Welch's t-test: Difference between revisions

Welch's t-test (view source)