Statistics Calculators
Browse our comprehensive collection of statistics calculators for descriptive statistics, probability, distributions, regression, hypothesis testing, ANOVA, nonparametric tests, data visualization, and more. Free online tools for students, researchers, and data analysts.
Mean, Median, Mode Calculator
Calculate the mean, median, mode, range, and other central tendency measures for a data set.
descriptiveStandard Deviation Calculator
Calculate the population and sample standard deviation, variance, and mean.
descriptivePercentile Calculator
Calculate the percentile of a data set.
descriptiveProbability Calculator
Calculate probability, complementary probability, union and intersection of events, conditional probability, combinations, permutations, and more.
probabilityCombination Calculator
Calculate combinations (nCr) and permutations (nPr) with step-by-step results.
probabilityFactorial Calculator
Calculate the factorial of a non-negative integer.
probabilityBinomial Distribution Calculator
Calculates binomial probabilities for a given number of trials and success probability.
probabilityNormal Distribution Calculator
Find probabilities, z-scores, and percentiles for the normal distribution.
distributionsZ-Distribution Calculator
Calculate probabilities, Z-scores, and percentiles for the standard normal distribution.
distributionsZ-Score Calculator
Compute z-scores from raw scores, or find raw scores from z-scores.
distributionst-Distribution Calculator
Find t-values, p-values, and probabilities for the Student's t-distribution.
distributionsConfidence Interval Calculator
Calculate confidence intervals for means, proportions, and differences.
hypothesist-Test Calculator
Calculate a t-test for one group, two independent groups, or paired samples to compare means and determine statistical significance.
hypothesisChi-Square Calculator
Calculate a chi-square test for goodness-of-fit, Chi-square test for independence, Chi-Square test for homogeneity, and Chi-Square test for trend.
hypothesisRegression Calculator
Calculate a linear regression for two variables to determine the relationship between them.
hypothesisOne-Way ANOVA Calculator
Perform one-way ANOVA to compare means across 3–6 groups. Get F-statistic, p-value, ANOVA table, and Tukey's HSD post-hoc test results.
anovaMann-Whitney U Test
Compare two independent groups with non-parametric Mann-Whitney test.
nonparametricWilcoxon Signed-Rank Test
Compare paired samples using non-parametric Wilcoxon test.
nonparametricKruskal-Wallis Test
Non-parametric alternative to one-way ANOVA for three or more groups.
nonparametricKolmogorov-Smirnov Test
Test goodness-of-fit or compare two samples with K-S test.
nonparametricShapiro-Wilk Test
Test for normality using the Shapiro-Wilk test with W-statistic and p-value.
nonparametricHistogram Creator
Create a histogram from data with automatic binning and frequency counts.
visualizationBox Plot Generator
Generate a box-and-whisker plot from a dataset with five-number summary.
visualizationPie Chart Creator
Generate pie charts from categorical data with percentages and labels.
visualizationBar Chart Generator
Create bar charts for categorical or grouped data with customization.
visualizationWhat Are Statistics Calculators?
Our Statistics Calculators collection provides a comprehensive suite of tools for analyzing data, understanding probability, and making statistical inferences. Whether you are a student learning introductory statistics, a researcher analyzing experimental data, or a data professional working with real-world datasets, these calculators offer accurate and clear solutions.
From descriptive statistics (mean, median, standard deviation) and probability to hypothesis testing, regression, ANOVA, nonparametric tests, and data visualization, our tools cover the full spectrum of statistical analysis.
How to Use This Directory
- Search: Type a keyword into the search bar to find specific tools by name or description.
- Filter by Category: Use the dropdown to narrow down calculators by statistical topic — each option shows the number of tools available.
- Click to Use: Each calculator card links directly to the tool. Click on any card to start your data analysis instantly.
- Explore More: Check the "Explore More Math Calculators" section for related calculators across other categories.
Why Use Our Statistics Calculators?
- Comprehensive: Covers descriptive statistics, probability, distributions, regression, hypothesis testing, ANOVA, nonparametric tests, and data visualization.
- Step-by-Step: Many calculators provide detailed computation steps, helping you understand the methods.
- Free & Accessible: No registration or fees — use any tool instantly on any device.
- Educational & Practical: Ideal for coursework, research, and professional data analysis.
- Accurate & Reliable: Built with robust statistical algorithms and thoroughly tested.
❓ Statistics Calculators FAQ
What types of statistical analyses can I perform?
You can perform descriptive statistics (mean, median, standard deviation, quartiles), probability calculations, distribution functions (normal, t, chi-square, F), regression and correlation, hypothesis testing (t-tests, z-tests, chi-square, ANOVA), and nonparametric tests.
How do I calculate the mean and standard deviation of a dataset?
Use the Mean, Median, Mode Calculator or the Standard Deviation & Variance calculator. Enter your data as a list of numbers, and the calculator will compute all measures with step-by-step work.
What is a normal distribution and how do I use it?
The normal distribution is a bell-shaped continuous distribution. Use the Normal Distribution Calculator to find probabilities, percentiles, and z-scores for any given mean and standard deviation.
How do I perform a t-test?
Use the One-Sample t-Test, Two-Sample t-Test, or Paired t-Test calculators. Enter your sample data (and optional population mean or paired differences) and the tool will compute the t-statistic, degrees of freedom, and p-value.
What is the difference between a one-tailed and two-tailed test?
In a one-tailed test, the alternative hypothesis specifies a direction (e.g., mean > 0). In a two-tailed test, it specifies that the mean is different from a value (≠). Our calculators let you choose which is appropriate for your hypothesis.
How do I calculate correlation between two variables?
Use the Correlation Coefficient calculator. Enter two lists of data (x and y), and the tool will compute the Pearson correlation coefficient r, the coefficient of determination R², and the p-value for significance.
What is ANOVA and when should I use it?
ANOVA (Analysis of Variance) is used to compare means of three or more groups. Use One-Way ANOVA for a single factor, or Two-Way ANOVA for two factors with interaction. Our calculators provide the full ANOVA table and post-hoc comparisons.
What are nonparametric tests and when should I use them?
Nonparametric tests do not assume a specific distribution for the data. Use them when data are not normally distributed or when working with ordinal data. Examples include Mann-Whitney U, Wilcoxon, Kruskal-Wallis, and Friedman tests.
How do I create a histogram or box plot?
Use the Histogram Creator or Box Plot Generator under the Data Visualization category. Enter your data, and the tools will generate the plot with appropriate scaling, labels, and summary statistics.
Can these calculators handle large datasets?
Yes, our calculators are designed to handle datasets of various sizes, though very large datasets may be limited by browser performance. For most educational and research purposes, they work efficiently.
How accurate are the p-values and confidence intervals?
We use robust numerical methods and standard statistical formulas. P-values are accurate to typical levels (e.g., 4-6 decimal places). Confidence intervals are computed using standard methods.
How often are new statistics tools added?
We continually expand our collection based on user feedback and emerging statistical methods. If you have a suggestion, please contact us via the contact page.