A comprehensive collection of web-based statistical calculators for marketing research, A/B testing, and data analysis. No installation required - just click and calculate.
Run directly in your browser. No downloads or setup required.
Pre-loaded examples and clear instructions for every calculator.
Detailed explanations and interpretation guides included.
Compare means across multiple groups with one-way and two-way analysis of variance.
Test categorical data with goodness of fit and independence tests.
Compare means between two groups with independent, paired, and one-sample tests.
Pairwise significance testing for comparing proportions between groups.
Calculate Pearson correlation coefficients with scatter plot visualization.
Interactive dashboard to explore correlation strength, regression lines, and shared variance with click-to-add points.
Non-parametric test for comparing two independent groups.
Interactive dashboard for exploring normal distributions and probabilities.
Calculate required sample sizes and statistical power for experiments.
Linear regression analysis with predictions and visualization.
Z-test for proportions to test differences in percentages.
Interactive demos for Bayesian inference, A/B testing, and belief updating.
Predict outcomes using multiple predictor variables with full coefficient analysis and VIF.
Follow-up pairwise comparisons after ANOVA using Tukey HSD or Bonferroni correction.
Binary outcome prediction with odds ratios, confusion matrix, and accuracy metrics.
Determine required sample sizes for T-tests, proportions, correlation, and ANOVA studies.
K-means clustering for customer segmentation with elbow plot and WCSS analysis.
Student-friendly guide to all tests with real examples and interpretation tips.
Copy-paste ready Python code for every statistical test. All imports included!
This collection of statistical calculators was built to make data analysis more accessible for marketing researchers, data analysts, and students. Each calculator is self-contained, runs entirely in your browser, and includes example data and detailed interpretations.
All calculators are built with modern web technologies (React, Tailwind CSS) and are completely free to use under the MIT License.