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1. [:FAQ/heterogeneity: What is heterogeneity of variance in SPSS Probit and Logit procedures?] | 1. [[FAQ/heterogeneity| What is heterogeneity of variance in SPSS Probit and Logit procedures?]] |
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1. [: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)] | 1. [[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)]] |
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1. [:FAQ/Collinearity:What is collinearity in multiple regression, and what do I do about it?] | 1. [[FAQ/Collinearity|What is collinearity in multiple regression, and what do I do about it?]] |
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1. [:FAQ/condnoR: How do I find the condition number of a matrix using R?] | 1. [[FAQ/condnoR| How do I find the condition number of a matrix using R?]] |
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1. [:FAQ/RatCaseVar:Is there an optimal ratio of cases to predictor variables I should have before performing a multivariate analysis?] | 1. [[FAQ/RatCaseVar|Is there an optimal ratio of cases to predictor variables I should have before performing a multivariate analysis?]] |
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1. [:FAQ/patternMatrix: Which matrix of loadings do I use doing a principal components extraction or non-PC analysis with a direct oblimin rotation when doing a factor analysis?] | 1. [[FAQ/patternMatrix| Which matrix of loadings do I use doing a principal components extraction or non-PC analysis with a direct oblimin rotation when doing a factor analysis?]] |
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1. [:FAQ/thresholds: What thresholds should I use for factor loading cut-offs?] | 1. [[FAQ/thresholds| What thresholds should I use for factor loading cut-offs?]] |
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1. [:FAQ/congruenceC: How do I compare a pair of factor loadings?] | 1. [[FAQ/congruenceC| How do I compare a pair of factor loadings?]] |
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1. [:FAQ/compare: What is the difference between principal components analysis, principal axis analysis and other factor extraction methods?] | 1. [[FAQ/compare| What is the difference between principal components analysis, principal axis analysis and other factor extraction methods?]] |
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1. [:FAQ/NoFactors: How many factors should I retain in a factor analysis?] | 1. [[FAQ/NoFactors| How many factors should I retain in a factor analysis?]] |
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1. [:FAQ/Cronbach: A note on Cronbach's Alpha.] | 1. [[FAQ/Cronbach| A note on Cronbach's Alpha.]] |
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1. [:FAQ/PlusFac: How do I interpret variables which load on more than one factor?] | 1. [[FAQ/PlusFac| How do I interpret variables which load on more than one factor?]] |
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1. [:FAQ/mds: What is multidimensional scaling and how do I do it?] | 1. [[FAQ/mds| What is multidimensional scaling and how do I do it?]] |
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1. [:FAQ/cancorr: What is canonical correlation and where can I use it?] | 1. [[FAQ/cancorr| What is canonical correlation and where can I use it?]] |
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1. [:FAQ/MANOVA:When should I use a Multivariate Analysis of Variance (MANOVA)?] | 1. [[FAQ/MANOVA|When should I use a Multivariate Analysis of Variance (MANOVA)?]] |
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1. [:FAQ/infmles:Why are the standard errors so large in logistic regression?] | 1. [[FAQ/infmles|Why are the standard errors so large in logistic regression?]] |
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1. [:FAQ/logrrsq:How do I choose between different logistic regression models?] | 1. [[FAQ/logrrsq|How do I choose between different logistic regression models?]] |
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1. [:FAQ/threshold:Which discriminant analysis should I use to obtain thresholds to indicate levels of abnormality using a single variable?] | 1. [[FAQ/threshold|Which discriminant analysis should I use to obtain thresholds to indicate levels of abnormality using a single variable?]] |
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1. [:FAQ/structure:How do I assess the importance of variables in a Normal Discriminant analysis?] | 1. [[FAQ/structure|How do I assess the importance of variables in a Normal Discriminant analysis?]] |
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1. [:FAQ/criteria:Can you recommend any two group discriminant diagnostics?] | 1. [[FAQ/criteria|Can you recommend any two group discriminant diagnostics?]] |
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1. [:FAQ/NDcasestat:Which output criteria should I use when using the casewise results option with the Normal discriminant method in SPSS?] | 1. [[FAQ/NDcasestat|Which output criteria should I use when using the casewise results option with the Normal discriminant method in SPSS?]] |
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1. [:FAQ/roc:How do I plot and interpret a ROC curve in assessing strength in two group prediction?] | 1. [[FAQ/roc|How do I plot and interpret a ROC curve in assessing strength in two group prediction?]] |
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1. [:FAQ/missing:How do I handle missing data in multivariate analyses in SPSS?] | 1. [[FAQ/missing|How do I handle missing data in multivariate analyses in SPSS?]] |
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1. [:FAQ/cc:How do I find complete cases in SPSS and R?] | 1. [[FAQ/cc|How do I find complete cases in SPSS and R?]] |
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1. [:FAQ/lag:How can I detect identical cases in SPSS without having an ID number?] | 1. [[FAQ/lag|How can I detect identical cases in SPSS without having an ID number?]] |
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1. [:FAQ/euclid:What is Euclidean distance and how do I compute it?] | 1. [[FAQ/euclid|What is Euclidean distance and how do I compute it?]] |
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1. [:FAQ/mahal:How do I detect multivariate outliers?] | 1. [[FAQ/mahal|How do I detect multivariate outliers?]] |
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1. [:FAQ/sem:Structural equation modelling in R] | 1. [[FAQ/sem|Structural equation modelling in R]] |
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1. [:FAQ/texts: Can you recommend any statistical textbooks?] | 1. [[FAQ/texts| Can you recommend any statistical textbooks?]] |
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1. [:FAQ/mvnormc: How do I check for multivariate normality?] | 1. [[FAQ/mvnormc| How do I check for multivariate normality?]] |
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1. [:FAQ/uneqcovs:What do I do if I have unequal group covariance matrices when doing a MANOVA?] | 1. [[FAQ/uneqcovs|What do I do if I have unequal group covariance matrices when doing a MANOVA?]] |
Questions about multivariate analyses
What is heterogeneity of variance in SPSS Probit and Logit procedures?
What is collinearity in multiple regression, and what do I do about it?
How do I interpret variables which load on more than one factor?
When should I use a Multivariate Analysis of Variance (MANOVA)?
Why are the standard errors so large in logistic regression?
How do I choose between different logistic regression models?
How do I assess the importance of variables in a Normal Discriminant analysis?
How do I plot and interpret a ROC curve in assessing strength in two group prediction?
How do I handle missing data in multivariate analyses in SPSS?
How can I detect identical cases in SPSS without having an ID number?
What do I do if I have unequal group covariance matrices when doing a MANOVA?