What is heterogeneity of variance in SPSS Probit and Logit procedures?
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)
What is collinearity in multiple regression, and what do I do about it?
How do I find the condition number of a matrix using R?
Is there an optimal ratio of cases to predictor variables I should have before performing a multivariate analysis or any guide as to total sample size?
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?
A guide to the pros and cons of choosing a method for producing factor scores from a factor analysis
What thresholds should I use for factor loading cut-offs?
How do I compare a pair of factor loadings?
What is the difference between principal components analysis, principal axis analysis and other factor extraction methods?
How many factors should I retain in a factor analysis?
A note on Cronbach's Alpha.
How do I interpret variables which load on more than one factor?
What is multidimensional scaling and how do I do it?
What is canonical correlation and where can I use it?
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 perform a cluster analysis in R?
Which discriminant analysis should I use to obtain thresholds to indicate levels of abnormality using a single variable?
How do I assess the importance of variables in a Normal Discriminant analysis?
Can you recommend any two group discriminant diagnostics?
Which output criteria should I use when using the casewise results option with the Normal discriminant method in SPSS?
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?
Using SPSS syntax to impute last observation carried forward (LOCF) for missing values in SPSS
How do I find complete cases in SPSS and R?
How can I detect identical (duplicate) cases in SPSS without having an ID number?
What is Euclidean distance and how do I compute it?
How do I detect multivariate outliers?
Structural equation modelling in R
Can you recommend any statistical textbooks?
How do I check for multivariate normality?
What do I do if I have unequal group covariance matrices when doing a MANOVA?