# Services from stats-tests.x402tookit.com on Zero

> stats-tests.x402tookit.com serves 10 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/stats-tests.x402tookit.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/stats-tests.x402tookit.com/health.json

## Services

- [Statistical Tests – Multiple Comparison P-Value Adjustment](https://www.zero.xyz/c/statistical-tests-multiple-comparison-p-value-adjustment-c081b13e/llms.txt): $0.02/call via x402. Adjusts a list of raw p-values for multiple testing using Bonferroni, Sidak, Holm, and Benjamini-Hochberg methods and reports which hypotheses survive each correction.
- [One-Way ANOVA Statistical Test](https://www.zero.xyz/c/one-way-anova-statistical-test-6329ee9a/llms.txt): $0.02/call via x402. Performs one-way ANOVA across 2–12 groups, returning F statistic, degrees of freedom, p-value, eta squared, omega squared, and group means.
- [Exact Binomial Test with Clopper-Pearson CI](https://www.zero.xyz/c/exact-binomial-test-with-clopper-pearson-ci-ca080054/llms.txt): $0.02/call via x402. Performs an exact binomial test for k successes in n trials against a hypothesised probability, returning two-sided and one-sided p-values plus the Clopper-Pearson confidence interval.
- [Chi-Square Test (Goodness of Fit & Independence)](https://www.zero.xyz/c/chi-square-test-goodness-of-fit-independence-6ea09a25/llms.txt): $0.02/call via x402. Runs a chi-square goodness-of-fit test on observed vs expected counts, or a chi-square independence test on a contingency table, returning the test statistic, p-value, degrees of freedom, and effect size.
- [Statistical Tests – Effect Size from 2×2 Table](https://www.zero.xyz/c/statistical-tests-effect-size-from-2-2-table-d5c88e92/llms.txt): $0.02/call via x402. Computes odds ratio, relative risk, risk difference, and number needed to treat with confidence intervals from a 2×2 contingency table of exposed/unexposed event counts.
- [Fisher's Exact Test (2×2 Table)](https://www.zero.xyz/c/fisher-s-exact-test-2-2-table-34e987e1/llms.txt): $0.02/call via x402. Computes two-sided and one-sided p-values via the hypergeometric distribution and the sample odds ratio for a 2×2 contingency table using Fisher's exact test.
- [Mann-Whitney U Test](https://www.zero.xyz/c/mann-whitney-u-test-9ec98810/llms.txt): $0.02/call via x402. Performs the Mann-Whitney U test on two independent samples, returning U statistics, exact or approximate p-values, and rank-biserial effect size.
- [Statistical Tests – Normality Check](https://www.zero.xyz/c/statistical-tests-normality-check-3f2ad65b/llms.txt): $0.02/call via x402. Screens a numeric sample for normality using skewness, excess kurtosis, Jarque-Bera test with p-value, and the 68-95-99.7 rule check.
- [Paired T-Test Statistical Analysis](https://www.zero.xyz/c/paired-t-test-statistical-analysis-161309de/llms.txt): $0.02/call via x402. Runs a paired t-test on before/after measurements from the same subjects, returning mean change, t-statistic, degrees of freedom, p-value, confidence interval, and Cohen's dz effect size.
- [Statistical Tests – Power & Sample Size for t-Tests](https://www.zero.xyz/c/statistical-tests-power-sample-size-for-t-tests-bdd8643f/llms.txt): $0.02/call via x402. Calculates the required sample size for a t-test given effect size, alpha, and power — or returns the achieved power for a given sample size.

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

- [Zero catalog index](https://www.zero.xyz/llms.txt)