Chapter 23- Statistical Analysis of Relationships: The Basics
Quiz yourself by thinking what should be in
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| What is correlation? | the value an individual exhibits o one variable is related to the value he or she exhibits on another variable; CORRELATION IS NOT CAUSATION
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| What is the most frequently used correlation coefficient? | the Pearson product moment correlation
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| What are the other correlation coefficients? | Spearman's rho and Kendall's tau used with ranked or ordinal #s; phi, Cramer's V, and kappa used for nominal data
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| What are the major assumptions of correlation coefficients? | 1 relationships between variables are assumed to be linear, 2 homoscedasticity, 3 both variables have enough variability to demonstrate a relationship
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| How are correlation coefficients interpreted? | 1 the strength of the coefficient itself, 2 the variance shared by the two variables, 3 the statistical significance of the correlation coefficient, 4 the confidence intervals about the correlation coefficient
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