Statistical Tests
Basic statistical test tools including t-test, chi-square test, and Z-test.
One-sample t-test: tests whether the sample mean differs significantly from a theoretical value
Usage Instructions
Features
Provides one-sample t-test, independent samples t-test, chi-square test, and Z-test, outputting statistics, p-values, and significance conclusions.
Steps
Select the corresponding test tab → enter sample data (comma-separated) or parameters → set significance level α → click "Test" to view statistics, p-value, and conclusion.
Notes
All computations run locally in the browser, with no data uploaded; the t-test is suitable for small samples of normally distributed data; the Z-test requires a known population standard deviation; results are for reference only and do not replace professional statistical software.