StatKey

to accompany Statistics: Unlocking the Power of Data
by Lock, Lock, Lock, Lock, and Lock
Descriptive Statistics and Graphs Bootstrap Confidence Intervals Randomization Hypothesis Tests
One Quantitative Variable CI for Single Mean, Median, St.Dev. Test for Single Mean
One Categorical Variable CI for Single Proportion Test for Single Proportion
One Quantitative and One Categorical Variable CI for Difference In Means Test for Difference in Means
Two Categorical Variables CI for Difference In Proportions Test for Difference In Proportions
Two Quantitative Variables CI for Slope, Correlation Test for Slope, Correlation
Sampling Distributions Mean Proportion
Theoretical Distributions Normal t χ2 F
More Advanced Randomization Tests χ2 Goodness-of-Fit χ2 Test for Association ANOVA for Difference in Means ANOVA for Regression