CHOOSING STATISTICS What is a Statistical Menu? How Do We Know What Statistic To Do?

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Presentation transcript:

CHOOSING STATISTICS What is a Statistical Menu? How Do We Know What Statistic To Do?

What is a Statistical Menu? Frequency DistributionPearson rIndependent Samples t-Test Percentile RankSpearman rhoDependent Samples t-Test MeanPoint-biserial rWilcoxon Rank-Sum Test MedianPhi CoefficientWilcoxon T Test ModeRegressionOne-Way BS ANOVA Standard Deviationz-TestKruskal-Wallis ANOVA z-ScoreSingle-Sample t-TestOne-Way RM ANOVA Simple ProbabilityConfidence Interval, z-scoresFriedman ANOVA Binomial ProbabilityConfidence Interval, t-scoresTwo-Way BS ANOVA Confidence Interval - ProportionTwo-Way Mixed ANOVA Chi-Square Goodness of FitChi-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?purpose What type of design do you have?design What type of data do you have?data

Menu Organized by Purpose DescribeEstimateRelateCompare Frequency DistributionConfidence Interval, z- scores Pearson rz-Test Percentile RankConfidence Interval, t- scores Spearman rhoSingle-Sample t-Test MeanConfidence Interval - Proportion Point-biserial rChi-Square Goodness of Fit MedianPhi CoefficientIndependent Samples t-Test ModeRegressionDependent Samples t-Test Standard DeviationChi-Square Test of Independence Wilcoxon Rank-Sum Test z-ScoreWilcoxon T Test Simple ProbabilityOne-Way BS ANOVA Binomial ProbabilityKruskal-Wallis ANOVA One-Way RM ANOVA Friedman ANOVA Two-Way BS ANOVA Two-Way Mixed ANOVA

Menu Organized by Design RelationalOne GroupIndependent GroupsRelated Groups Pearson rConfidence Interval, z- scores Chi-Square Goodness of Fit Dependent Samples t-Test Spearman rhoConfidence Interval, t- scores Independent Samples t-Test Wilcoxon T Test Point-biserial rConfidence Interval - Proportion Wilcoxon Rank-Sum Test One-Way RM ANOVA Phi Coefficientz-TestOne-Way BS ANOVAFriedman ANOVA RegressionSingle-Sample t-TestKruskal-Wallis ANOVA Chi-Square Test of Independence

Menu Organized by Design and Data Type Independent GroupsRelated Groups NominalChi-Square Goodness of Fit OrdinalWilcoxon Rank-Sum Test Kruskal-Wallis ANOVA Wilcoxon T Test Friedman ANOVA Interval/RatioIndependent Samples t-Test One-Way BS ANOVA Dependent Samples t-Test One-Way RM ANOVA