This page computes various statistics from a 2-by-2 table. It will calculate the Yates-corrected chi-square, the Mantel-Haenszel chi-square, the Fisher Exact Test, and other indices relevant to various special kinds of 2-by-2 tables. Registration not required.
The web pages listed here comprise a powerful, conveniently-accessible, multi-platform statistical software package. There are also links to online statistics books, tutorials, downloadable software, and related resources. Registration required.
This screen computes several statistics from a table whose row and column categories form logically ordered sequences. It can accommodate a table with up to five rows and/or five columns Registration not required.
This page performs logistic regression, in which a dichotomous outcome is predicted by one or more variables. The program generates the coefficients of a prediction formula, and odds ratios. Data can be copied and pasted from files. Registration not required.
This page analyzes survival-time data by the method of Proportional Hazards regression (Cox). Given survival times, final status (alive or dead), and one or more covariates, it produces a baseline survival curve and covariate coefficient estimates with their standard errors, confidence intervals, and significance levels. Registration not required.