Webpage describing the uses and interpretation of t-tests.
What this resource offers
This is a concise, yet comprehensive non-technical set of webpages that describes how to properly use the different types of t-tests (one-sample t-test, two-sample t-test, and paired t-test). It provides information about the assumptions of t-tests, when to use one-tailed or two-tailed tests, and how to test for equal variance for two-sample t-tests. Examples and detailed analysis are provided.
Who created it
This set of webpages is provided by the JMP statistical software company, a subsidiary of SAS Institute, as part of its Statistics Knowledge Portal (“a free online introduction to statistics”).
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