Choosing the right statistical test
Use the test chooser to match your research question and data to a suitable method.
Free Online Statistical Analysis Tools for Research
Statistical analysis made simple. Analyze data, explore relationships, visualize results, and prepare research-ready statistical reports with free online tools designed for students and researchers.
- Free statistical analyses
- Browser-based workflow
- APA 7-style reporting features
- Tutorials for interpreting results
All statistical analyses
All 51 analysis and chart tools in one place. Select any button to open it.
Descriptive statistics and visualization
6Correlation and association
6Regression analysis
12Mediation and moderation
2PCA and network analysis
2t-Tests, z-Tests and ANOVA
11Popular analysis tools
Start with the methods researchers use most. Each tool opens with its own instructions and a linked tutorial.
- Descriptive StatisticsSummarize each variable with measures of central tendency, spread and distribution.
- Correlation AnalysisMeasure the strength and direction of relationships between variables.
- Regression AnalysisModel how one or more predictors relate to an outcome, with linear or logistic options.
- t-TestsCompare means for one sample, two independent groups or paired measurements.
- ANOVACompare means across three or more groups, including factorial and repeated-measures designs.
- Mediation AnalysisTest whether a predictor affects an outcome through an intermediate variable.
- Moderation AnalysisExamine whether the effect of one variable depends on the level of another.
- Structural Equation Modeling (SEM)Test hypothesized relationships among observed and latent variables in one model.
- Confirmatory Factor Analysis (CFA)Check whether your items fit a factor structure you specify in advance.
- Exploratory Factor Analysis (EFA)Explore the underlying factors behind a set of related items.
- Principal Component Analysis (PCA)Reduce many correlated variables to a smaller set of components.
- Network AnalysisExplore how variables connect to one another as a network.
Built for academic research
What StatFas offers today. Features vary by method, so each tool's page and tutorial describe what that analysis includes.
Statistical analysis
Enter or upload data, choose variables and run supported analyses directly in your browser.
Statistical reporting
Results appear in organized tables, and each tutorial includes an APA 7-style reporting template with a worked example.
Data visualization
Create bar plots, pie charts, line graphs and heatmaps from your own data.
Assumption checks
Where a method includes them, assumption checks and effect sizes appear beside the results. Each tutorial lists what to verify for that method.
Research tutorials
Step-by-step guides cover data preparation, choosing a method, reading the output and reporting results.
Downloadable results
Anyone can run analyses and view results. Downloading results requires a free account.
How it works
Four steps from question to results.
Choose a method
Pick an analysis from the directory, or use the test chooser if you are unsure which one fits your question.
Add your data
Upload or enter data in the format the tool supports. Each tool's page explains the layout it expects.
Select variables and run
Choose your variables and options, then run the analysis in your browser.
Interpret and download
Read the output with the help of the tutorial, then download your results when you want a copy.
Analyses are free to run, and no account is needed. A free account is required only to download results. You choose the method and interpret the output; the tutorials and test chooser are there to help. Create a free account
Research learning center
Learn when to use a method, what to check and how to report it.
Effect sizes and assumption testing
Benchmarks for interpreting effect sizes, plus guidance on checking assumptions.
Interpreting regression results
See how to read regression output and report it with a worked example.
Mediation, moderation and SEM
Guides to the logic of each model, reading the output and reporting the results.
APA 7 statistical reporting
An APA 7 cheat sheet, and a reporting template with a worked example for each analysis.
Tutorials for every analysis
Data layout, assumptions, how to read the output and how to write it up, one guide per method.
About StatFas
What the platform is for, and where to find more.
Who it is for
Researchers, university and postgraduate students, teachers and data analysts who need statistical analysis for coursework, theses and research projects.
What it provides
51 analysis and chart tools in eight categories, each linked to a tutorial. See the full directory above.
Learning to interpret results
Tutorials explain data layout, assumptions, how to read the output and how to report it. Resources add a test chooser and an APA 7 cheat sheet.
Contact and policies
The tools support your analysis, but choosing a suitable method and interpreting results in context remain your responsibility. Read the Privacy Policy for how data and account information are handled.
Frequently asked questions
Is StatFas free?
Yes. Every analysis is free to run, and the Basic, Standard and Pro plans are all $0. No credit card is requested.
Do I need an account to run an analysis?
No. Open a tool, enter or upload your data, choose your variables and run the analysis. A free account is needed only when you want to download your results.
Which statistical methods are available?
51 analysis and chart tools in eight categories, from descriptive statistics and charts to t-tests, ANOVA, regression, mediation, SEM and PCA, plus non-parametric and categorical tests. The full directory on this page links to each one.
Can I use Excel data?
You can prepare your data in Excel: use one column per variable and a header row, then upload or enter it in the tool you want. Accepted file formats vary by tool, so check the instructions on the tool's page.
Does StatFas support APA 7-style reporting?
StatFas is built around APA 7 reporting: each analysis has a tutorial with a reporting template and a worked example. Always check that your final write-up meets the requirements of your institution or journal.
How do I download results?
Run your analysis, then log in or create a free account when you click a download button. Your results stay on the page while you sign in. For account security, an account is active on one device at a time.
How do I choose the appropriate statistical test?
Start with the test chooser on the Resources page, then read the tutorial for the method you select: it explains when to use it, how to prepare your data and which assumptions to check.