What exactly is an Anderson-Darling test? Testing for normality is often the first step in analyzing your data. Many statistical tools you might use have normality as an underlying assumption. If you ...

In this paper we prove the asymptotic normality of two statistics which have been proposed to test the hypothesis that two samples come from the same parent population. One statistic is the number of ...

Sankhyā: The Indian Journal of Statistics, Series B (1960-2002), Vol. 39, No. 1 (Feb., 1977), pp. 45-56 (12 pages) Pillai and Jayachandran (1968) studied the power function of four test criteria for ...

At times we wish to examine statistical evidence, and determine whether it supports or contradicts a claim that has been made (or that we might wish to make) concerning the entire population. This is ...

Christina Majaski writes and edits finance, credit cards, and travel content. She has 14+ years of experience with print and digital publications. Khadija Khartit is a strategy, investment, and ...

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 ...