Regression and Correlation 0.0 / 5 ? PsychologyRegressionUniversityNone Created by: frankie_1212Created on: 10-07-18 12:59 What does regression allow? Allows Prediction of Y on the basis of X 1 of 20 What is correlation? Measures the strength of relationship between X and Y 2 of 20 Pearsons Interval or ratio 3 of 20 Spearman's Rho Ordinal + Ordinal 4 of 20 Kendall's Tau Ordinal and Ordinal 5 of 20 Phi True Dichotomy and True Dichotomy 6 of 20 Point Biseral True dichotomy and interval or ratio 7 of 20 Venn Diagram Size of circles represent variance of varibles 8 of 20 What do overlapping circles denote? Correlated variables 9 of 20 What is Partial correlation? What is the relationship between 2 variables once the effect of the other variables has been removed 10 of 20 Multiple Regression Y= B0 + B1X1 + B2X2 + BpXp 11 of 20 Simultaneous No Priori model, Enter all IVs at once 12 of 20 Stepwise Not a priori model, computer chooses on statistical ground, chance effects 13 of 20 Hierarchical Theoretically sound, sequence of entry 14 of 20 Outliers Cooks distance of 1 or greater 15 of 20 Heteroscedasity One variable is skewed or the relationship is non-linear 16 of 20 Singularity Redundancy, one variable combination of 2 or more other variables 17 of 20 Multi-collinearity Variables are highly correlated 18 of 20 medium size effect Multiple Correlations: N>50+8*m 19 of 20 Simple linear regression N>104+M 20 of 20
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