About Statoma
Statoma is a statistics calculator suite for people who need more than a final number. Each calculator is designed to connect the result with the question being asked, the assumptions behind the method, and the limits of interpretation.
Why Statoma Exists
Many statistics tools are fast but silent. They return a p-value, confidence interval, or sample size without showing how the method fits the data. That can be enough for someone who already knows the procedure, but it is frustrating for students, researchers, journalists, and analysts who are still checking whether they chose the right method. Statoma is built for that moment: the place where calculation and explanation need to sit together.
The first release focuses on common inferential statistics: t-tests, p-values, confidence intervals, sample size planning, and chi-square tests. These are familiar methods, but they are also easy to misuse. A t-test can answer the wrong question if paired data are treated as independent. A p-value can be misread as the probability that a hypothesis is true. A chi-square result can look decisive even when expected counts are too small for the approximation to be trustworthy.
How The Calculators Are Built
Statoma keeps calculations in testable TypeScript functions and runs them in the browser. The site is exported as static files, so there is no server-side calculator storage, no API route required for a result, and no database behind the calculator pages. That architecture keeps the early product simple and makes each method easier to inspect.
Each calculator page follows a consistent pattern. The tool appears first, followed by plain-English interpretation, a description of the method, guidance on when to use it, formulas, a worked example, common mistakes, frequently asked questions, and related internal links. The goal is not to hide statistical complexity. The goal is to make the complexity legible enough that users can make better decisions about their data.
Who It Is For
Statoma is written for people doing real work with limited time: students checking homework, graduate researchers planning studies, journalists reading reported statistics, and data practitioners translating summary numbers into decisions. It is also designed to stay useful as the site grows into topic guides and applied workflows.
If you are starting from a statistical question, begin with the full list of Statoma calculators. If you are starting from a concept, the statistics topics index will become the guide layer that connects ideas to the tools that use them.