Two Sample T Test Formula. Reject the null hypothesis that the two means are equal if. When the sample sizes are equal b true or b false yields the same result.
Df pooled r1 r2 degrees of freedom for the two sample t test for samples in ranges r1 and r2 especially when the two samples have unequal variances i e. Two sample t test formula. Where and are the means of the two samples δ is the hypothesized difference between the population means 0 if testing for equal means s 1 and s 2 are the standard deviations of the two samples and n 1 and n 2 are the sizes of the two samples.
Df pooled r1 r2 degrees of freedom for the two sample t test for samples in ranges r1 and r2 especially when the two samples have unequal variances i e.
Two sample t test formula. S 2 x m a 2 x m b 2 n a n b 2. Unknown population means mu1 bar and mu2 bar. It can be calculated as follow.
