Session 4: Commonly Used Statistics

Key Terms

• Parametric and Non-parametric
• Descriptive and Inferential
• Statistical Significance and Practical Significance
• Univariate and Multivariate

I want to simply describe my data...

• Frequencies
• Measures of Central Tendency (Mean, Median Mode)
• Measures of Distrubtion (Normal,skewness, kurtosis)
• Measures of Dispersion (range, standard deviation)
• Crosstabs

I want to examine relationships among my linear, normally distributed variables...

• Correlation
• Linear (Simple) Regression
• Multiple Regression
• Factor Analysis

I want to examine groups differences in my linear, normally distributed data...

• t-tests
• Family of ANOVA and MANOVA

I want to look at my linear, normally distributed data longitudinally...

• Repeated Measures

I want to examine relationships among my non-linear and/or non-normally distributed variables...

• Spearman's R
• Kendall tau

I want to examine groups differences in my non-linear and/or non-normally distributed data...

• Mann-whitney U test
• Kolmogorov Smirnov
• Sign test
• Wilcoxon's matched pairs test
• McNemar's Chi Square

I want to look at my non-linear and/or non-normally distributed data longitudinally...

• Friedman's Two-way Analysis of Variance
• Cochran Q test

Online Tool for Determining Appropriate Statistics