How to use the two sample t-test
RIS ID
73616
Abstract
This work discusses how two sample t-tests behave when applied to data that may violate the classical statistical assumptions of independence, heteroscedasticity and Gaussianity. The usual two sample t-statistic based on a pooled variance estimate and the Welch-Aspin statistic are treated in detail. Practical "rules-of-thumb" are given along with their applications to various examples so that readers will easily be able to use such tests on their own data sets.
Publication Details
Cressie, N. A. & Whitford, H. 1986, 'How to use the two sample t-test', Biometrical Journal: journal of mathematical methods in biosciences, vol. 28, no. 2, pp. 131-148.