Moogle in the Machine

Estimate confidence levels based on your survey sample size and population. Quickly check if your margin of error meets the standard.

Identify leading or biased language in your research questions and get suggestions for neutral phrasing.

Compare success rates between two or more groups to determine statistical significance.

An interactive graph that shows what a p-value really means. Drag sample size and rates to watch it move, and hover any part to see how it's calculated.

Test whether two categories are related, like which page people saw and which plan they picked. Edit a table and watch the chi-square curve, expected counts, and effect size update.