pairwisettest
Pairwise t-test, also known as paired sample t-test, is a statistical method used to compare the means of two related groups. It is typically employed when examining the effect of a treatment or intervention within the same subjects or matched pairs, allowing for control of confounding variables. This test assesses whether the average difference between paired observations significantly deviates from zero.
The pairwise t-test assumes that the differences between pairs are normally distributed. It involves calculating the
Common applications include pre-test and post-test evaluations, within-subject experiments, and matched case-control studies. The test produces
Critically, the paired t-test is most appropriate when the pairs are meaningfully linked, and the data meet
The pairwise t-test is a fundamental tool in experimental design and data analysis, helping researchers determine