Read on to learn more about what a t-test is, the different formulas used, and when to apply each type to compare means and analyze statistical significance.

Some existing nonparametric two-sample tests for equality of multivariate distributions perform unsatisfactorily when the two sample sizes are unbalanced. In particular, the power of these tests tends ...

Among the most common types of experiments are comparative studies that contrast outcomes under different conditions such as male versus female, placebo versus drug, or before versus after treatment.

The Annals of Statistics, Vol. 48, No. 3 (June 2020), pp. 1304-1328 (25 pages) We propose a two-sample test for high-dimensional means that requires neither distributional nor correlational ...

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...