Sigma says...

Guess the standard deviation of a sample.

What's the z?

Guess the z-score of a data point relative to a sample.

Effective d-tective

Guess the effect size (Cohen's d of the difference between two samples.

Sample shuffle

See the means dancing!

Confidence Can-Can

See the confidence intervals dancing!

CI Explorer

Examine how confidence intervals change!

CI Private Eye

Guess the confidence interval for a sample.

One-Sample t-Test Visualizer

Test single samples against a constant population mean.

Independent-Samples t-Test Visualizer

Compare two samples against the assumption of no difference in means.

One-Way ANOVA Visualizer

Compare up to six samples against the assumption of no difference in means.

Calculate One-Way ANOVA Effect Sizes

Calculate effect sizes for One-Way ANOVA using F and degrees of freedom.

Correlation Station

Shift and remove data points to see how scatterplot shapes influence correlation.

Correlation CI Explorer

Examine how confidence intervals for correlations change!

2x2 Chi-Squared Explorer

Change the counts, change the world.

Cellular Migration

Drag counts between cells, while maintaining row and column totals to shift the chi-squared.

Odds Squad

Shift the distribution of cases in groups to learn about relative risk and odds ratios

Fit the Slopes

Adjust the intercept and slope to estimate the best fit regression line.