CHOOSING STATISTICS

What is a Statistical Menu?Frequency Distribution Pearson r Independent Samples t-Test

Percentile Rank Spearman rho Dependent Samples t-Test

Mean Point-biserial r Wilcoxon Rank-Sum Test

Median Phi Coefficient Wilcoxon T Test

Mode Regression One-Way BS ANOVA

Standard Deviation z-Test Kruskal-Wallis ANOVA

z-Score Single-Sample t-Test One-Way RM ANOVA

Simple Probability Confidence Interval, z-scores Friedman ANOVA

Binomial Probability Confidence Interval, t-scores Two-Way BS ANOVA

Confidence Interval - Proportion Two-Way Mixed ANOVA

Chi-Square Goodness of Fit Chi-Square Test of Independence

How Do We Know What Statistic to Do?

• Be aware of the options: statistical menu.• Know how to find out about other options.• Organize your knowledge.• Ask a series of questions.• Look for examples in the literature.• Practice.

How Do We Know What Statistic to Do?

• What is the purpose of your study?• What type of design do you have?• What type of data do you have?

Menu Organized by PurposeDescribe Estimate Relate Compare

Frequency Distribution Confidence Interval, z-scores

Pearson r z-Test

Percentile Rank Confidence Interval, t-scores

Spearman rho Single-Sample t-Test

Mean Confidence Interval - Proportion

Point-biserial r Chi-Square Goodness of Fit

Median Phi Coefficient Independent Samples t-Test

Mode Regression Dependent Samples t-Test

Standard Deviation Chi-Square Test of Independence

Wilcoxon Rank-Sum Test

z-Score Wilcoxon T Test

Simple Probability One-Way BS ANOVA

Binomial Probability Kruskal-Wallis ANOVA

One-Way RM ANOVA

Friedman ANOVA

Two-Way BS ANOVA

Two-Way Mixed ANOVA

Menu Organized by DesignRelational One Group Independent Groups Related Groups

Pearson r Confidence Interval, z-scores

Chi-Square Goodness of Fit

Dependent Samples t-Test

Spearman rho Confidence Interval, t-scores

Independent Samples t-Test

Wilcoxon T Test

Point-biserial r Confidence Interval - Proportion

Wilcoxon Rank-Sum Test

One-Way RM ANOVA

Phi Coefficient z-Test One-Way BS ANOVA Friedman ANOVA

Regression Single-Sample t-Test Kruskal-Wallis ANOVA

Chi-Square Test of Independence

Menu Organized by Design and Data Type

Independent Groups Related Groups

Nominal Chi-Square Goodness of Fit

Ordinal Wilcoxon Rank-Sum TestKruskal-Wallis ANOVA

Wilcoxon T TestFriedman ANOVA

Interval/Ratio Independent Samples t-TestOne-Way BS ANOVA

Dependent Samples t-TestOne-Way RM ANOVA