Statistical Analysis
Free browser-based Statistical Analysis tools.
Descriptive Statistics Calculator
Mean, median, mode, range
Correlation Matrix Builder
Pairwise correlations
Regression Line Visualizer
Linear regression on scatter
Distribution Fitter
Fit common distributions
Confidence Interval Calculator
Compute CIs
Hypothesis Testing Guide
Walk through tests
p-Value Explainer
Understand significance
Chi-Square Test Tool
Test independence
t-Test Guide
Compare two means
ANOVA Concept Tool
Compare many groups
Z-Score Calculator
Standardize values
Standard Deviation Visualizer
See spread of data
Skewness & Kurtosis Calculator
Distribution shape
Sampling Size Estimator
Plan study sample size