Run an independent-samples t test in one of the free calculators floating around the web and you usually get the same thing back. A t value. A p value. Sometimes a df. Nothing else. You then open a second tab to figure out effect size, a third to work out the confidence interval, and by the time you have what a defensible sentence needs, you have been in five places and are half sure you copied the numbers correctly. That is the job StatsAssistance.com is trying to remove.
StatsAssistance is a free web statistics site built by ReliCheck. It has ten calculators, most of the tests students actually have to run in a semester, and one small idea that changes the whole feel of the tool. Every result comes back as an APA 7 formatted sentence, with the test statistic, df, exact p, effect size, and confidence interval already written the way the paper will need it. Under the sentence, a plain-language interpretation of what the number actually means.
The ten cover what most one-course or first-methods-course students meet: independent, paired, and one-sample t tests, chi-square, Pearson and Spearman correlation, Cohen's d, confidence intervals, sample size for a planned study, descriptives for a first look at a dataset, and a text analyzer for a short qualitative pass. It is not built to replace a full stats package. It is built to be the version of that stats package a student, or a researcher pausing on a side calculation, can open in a browser without an account, and finish the number in a minute.
The APA sentence, ready to paste
Writing out a statistical result is a small task with an outsized capacity to steal an evening. Students know the number is right but the sentence is wrong. Advisors know the sentence is close but the effect size is missing. Reviewers know the confidence interval was omitted. StatsAssistance builds the sentence with all of that in it, so the piece of the paper the calculator can actually finish, it finishes.
That matters more than it sounds. The formatting standard is not the hard part of a study. It is the part that eats time from the parts that are hard, like deciding which test the design actually earns.
A decision guide, for when the student is not sure
Which test should I use is the question most search bars in statistics get asked, and most of the answers on the internet are wrong for the study at hand. StatsAssistance includes an interactive "Which test should I use?" guide that asks about your variables, your design, and your goal, and points to the calculator that fits. The same conversation a good instructor has with a student in an office hour, made available at midnight.
Free web, powered by Quanta
StatsAssistance is deliberately positioned. It is free. There is no account to make. The analysis under every calculator is Quanta, the same engine that runs the ReliCheck Mac statistics application. StatsAssistance is the free web surface of that engine. The Mac app is the full-featured surface of the same engine, for the longer analyses that need a real project, real datasets, and the tables and charts a manuscript will carry. Alongside both, MM Studio handles mixed-methods work where the numbers and the narratives belong in the same file. StatsAssistance is where the semester starts, where a quick check finishes, and where a researcher who wants to see how ReliCheck handles the small tests can look at the smallest surface before deciding about the bigger ones.
For MM Studio users, a quick side check
If you already work in MM Studio and need a fast t test or a correlation on a subset before writing a section, StatsAssistance is the second window you would keep open. Paste the two vectors in, get the APA sentence, put it back in the report. Nothing installed, nothing routed through a server that is not ReliCheck's, no context switch out of the sentence you were trying to finish.
Why the free layer looks this way
Serious statistics software gets judged on the hardest analyses it can do. A student's day, or a beginner's, rarely lives up there. It lives in the ten tests above, run under time pressure, and reported into a paper that has a formatting rulebook. Give that day a tool that respects the rulebook and speaks the student's language, and the number becomes something they can defend instead of something they can only report. StatsAssistance is where the free layer of the ReliCheck ecosystem starts, running the same engine you would find in the paid Mac app.
StatsAssistance.com is a free web statistics site by ReliCheck, powered by the Quanta analysis engine. Ten calculators, an interactive "Which test should I use?" guide, and results returned as APA 7 sentences with effect sizes and confidence intervals. See it at statsassistance.com.