Multivariate Analysis – Questions With Solutions
Multivariate Analysis ✔ Ans - ability to examine several response variables
within single study; account for potential interrelationships in the analysis of
data; complex statistical procedures
Exploratory Factor Analysis (EFA) ✔ Ans - examines linear combinations of
underlying factors that explain a latent variable or construct
Confirmatory Factor Analysis (CFA) ✔ Ans - Confirm hypotheses about
structure of underlying constructs
Principal Component Analysis (PCA) ✔ Ans - Attempts to reduce data to smaller
set of summary variables of components
Latent traits ✔ Ans - constructs that cannot be directly measured but influence
behavior
Bartlett's test of sphericity ✔ Ans - A test statistic used to examine the
hypothesis that the variables are uncorrelated in the population. Uses chi-square
distribution to test null hypothesis that intercorrelations equal zero
Communalities ✔ Ans - measure of proportion of each variable's variance that
can be explained by factors
principal axis factoring ✔ Ans - defines factors based on their intercorrelations
Eigenvalue ✔ Ans - how much of the total variance is explained by a factor
Structural Equation Modeling (SEM) ✔ Ans - statistical techniques that are
used to evaluate a proposed set of relationships among variables; illustrate
possible causal relationships; whether a pattern of intercorrelations among
variables "fit" underlying theory and directionality of those relationships;
combines factor analysis and multiple regression
exogeneous variable ✔ Ans - independent predictor variable, causes are external
to model, not included in theory
