Other Statistical Calculators

The following are links to a sample of very useful calculators developed by other students and faculty of various institutions. These links as well as a large collection of links to other statistical tools can be found at John Pezzullo's site. These calculators are especially useful to illustrate the potential of the World Wide Web in disseminating statistical knowledge, and hopefully spark collaborative efforts to put statistics on the internet.

• Comparing means, one-sample and two-sample designs

• Sample-size, given effect size and confidence

• Power simulation for hypothetical survey questions

• Power and sample size for various ANOVAs

• Retrospective power analysis

• Power for Fisher's Exact Test

• Cross-over studies with a measurement outcome

• Comparing proportions, one-sample and two-sample designs.

• Sample size for precision to reflect the population

• Power for one-sample and two-sample occurrence rates

• Power and sample size for comparing observed correlation coefficient to a certain value

• Power calculations for clinical trials

• For a study of the effect of one variable on another

• Parallel trial with a measurement outcome