HEATKEYS

Statistical resources for social scientists, including Z-test, Chi-square & T-test statistical calculators.

A free online t-test calculator. Statsisitcs calculator computes p values for 1-tailed or 2-tailed t-tests. Performs the t-test for groups with equal variance, unequal variance, and matched groups (paired groups).

Free Online Math Calculators and Converters. Mathematics Calculation is made easier.

GraphPad Prism is a powerful combination of biostatistics, curve fitting (nonlinear regression) and scientific graphing in one comprehensive program. Easily organize, analyze and graph repeated experiments; pick appropriate statistical tests and inte...

DanielSoper.com - The homepage of Daniel Soper

DataStar is a leading provider of survey management and data processing services, specializing in web surveys for employee and customer feedback.

Web site for statistical computation; probability; linear correlation and regression; chi-square; t-procedures; t-tests; analysis of variance; ANOVA; analysis of covariance; ANCOVA; parametric; nonparametric; binomial; normal distribution; Poisson di...

Finance, Math and Engineering Calculators are the small pieces of web applications or tools that perform the calculations as precise as possible. The vast area of topics have been covered and ranges from mortgage, loan, interest, investment, tax, pro...

Online tools and calculators for biology, bioinformatics, statistics, and medical statistics.

Survey software for online surveys, paper surveys, and interviewing. Outstanding crosstab tables and statistical analysis. Survey software and Web survey software for marketing research, public opinion polls, customer satisfaction, and program evalua...

A large collection of links to interactive web pages that perform statistical calculations