Questions about multivariate analyses
- [:FAQ/heterogeneity: What is heterogeneity of variance in SPSS Probit and Logit procedures?]
[:FAQ/SobelTest:How do I test whether one independent variable has an influence on a dependent variable other than via the mediation of a second independent variable? (Sobel Test)]
[:FAQ/Collinearity:What is collinearity in multiple regression, and what do I do about it?]
- [:FAQ/condnoR: How do I find the condition number of a matrix using R?]
[:FAQ/RatCaseVar:Is there an optimal ratio of cases to predictor variables I should have before performing a multivariate analysis?]
- [:FAQ/patternMatrix: Which matrix of loadings do I use doing a principal components or factor analysis with a direct oblimin rotation?]
- [:FAQ/NoFactors: How many factors/components should I retain in a factor/principal components analysis?]
- [:FAQ/PlusFac: How do I interpret variables which load on more than one factor?]
- [:FAQ/mds: What is multidimensional scaling and how do I do it?]
- [:FAQ/cancorr: What is canonical correlation and where can I use it?]
[:FAQ/MANOVA:When should I use a Multivariate Analysis of Variance (MANOVA)?]
- [:FAQ/infmles:Why are the standard errors so large in logistic regression?]
- [:FAQ/threshold:Which discriminant analysis should I use to obtain thresholds to indicate levels of abnormality using a single variable?]
- [:FAQ/structure:How do I assess the importance of variables in a Normal Discriminant analysis?]
- [:FAQ/criteria:Can you recommend any two group discriminant diagnostics?]
- [:FAQ/roc:How do I plot and interpret a ROC curve in assessing strength in two group prediction?]
- [:FAQ/missing:How do I handle missing data in multivariate analyses in SPSS?]
- [:FAQ/lag:How can I detect identical cases in SPSS without having an ID number?]
- [:FAQ/texts: Can you recommend any statistical textbooks?]