Free Statistical Analysis Online Calculators, Guides and Ethical Support
Free calculators and practical guides
Run t-tests, ANOVA, chi-square, correlation, regression and hundreds of other calculations online, then use practical guides to understand the formula, assumptions and result.
Choose the right method
Move from your research question to a focused calculator for group comparisons, relationships, prediction, categorical data and nonparametric analysis.
Interpret results with confidence
Get ethical guidance for SPSS, R, Python, Excel, Power BI, assumptions, output interpretation and clear reporting.
Popular methods
Choose a focused calculator, enter the required values and review the result with practical guidance about the method.
Calculate mean, median, mode, range, variance and standard deviation.
Open the Descriptive Statistics calculator →Compare two independent group means and review the test statistic and p-value.
Open the Independent T-Test calculator →Compare three or more group means with an F statistic and significance result.
Open the One-Way ANOVA calculator →Analyze categorical counts with a chi-square statistic and decision output.
Open the Chi-Square Test calculator →Measure the direction and strength of a linear relationship.
Open the Pearson Correlation calculator →Estimate slope, intercept, model fit and predicted values.
Open the Linear Regression calculator →A clear workflow
A useful result starts with the right question and method—not only a p-value.
Identify the outcome, groups or predictors and what the analysis must answer.
Review variable type, independence, distribution, sample size and assumptions.
Run the calculator, then interpret the estimate, statistic, p-value and practical meaning.
Learn the method
Read practical explanations of formulas, assumptions, interpretation and workflows in SPSS, R, Python and Excel.
Yes. Salar Cafe provides browser-based calculators for descriptive statistics, t-tests, ANOVA, chi-square, correlation, regression and many other methods.
Start with your research question, outcome type, number of groups, study design and assumptions. Each calculator links to guidance that helps you check the method.
The calculators are designed to run in the browser. Do not enter confidential identifiers, and review the privacy policy before sending files through a contact form.
Choose your next step
Start with a free resource, choose a statistical method, or request scoped help interpreting SPSS, R, Python or Excel results. All links below lead to dedicated pages with clear instructions.
Review the course formulas, interpretations and worked examples for AP Statistics 2027.
Explore the formula sheet →Access a dedicated online calculator in Persian without installing software.
Open the Persian calculator →Explore statistical methods, work with data and check assumptions in the browser.
Open the statistics studio →Need interpretation or a dashboard? Review ethical data-analysis services, then request a scoped quote.
Browse analysis services →Use the free tools first, then ask for ethical guidance if your design or output needs review.