Welch's t-test: Difference between revisions

m1:=Mean(x),m2:=Mean(y),

v1:=Variance(x),v2:=Variance(y),

t:=(m1-m2)/sqrt(v1/n1+v2/n2);

nu:=(v1/n1+v2/n2)^2/(v1^2/(n1^2*(n1-1))+v2^2/(n2^2*(n2-1)));