MultivariateTopics1
Do we want Wilks’ Lambda to be: Large or small? Why?
Small; measures variance not explained
Socioeconomic Status = w1Educ + w2Income + w3Wealth an example of?
Discriminant function (composite / latent variable)
Which FA technique allows factors to be correlated?
Oblique
Which data reduction technique analyzes all variance?
CFA / SEM
Primary difference between “path analysis” and Factor Analysis
Only MV in path analysis; Latent in FA
If multivariate effect (Wilks’ lambda) significant, what is next step?
Examine univariate results for each DV.
A mortgage company uses Age, Income, & Debt to predict who is or is not eligible for a loan. Which procedure?
Discriminant Analysis
Tells us proportion of variability in the MVs accounted for by a factor
Eigenvalue or SSL
Which data reduction technique allows MVs to load on more than one factor?
EFA
ANCOVA/MANCOVA: How are the “adjusted” means computed?
Predicted Ys from MR w/ X & Cov as predictors
This procedure minimizes chance a researcher will miss measuring “right” DV.
MANOVA
If a there is a significant main effect of a 3-group IV in MANCOVA, it means that the groups differ on...?
Adjusted means
What is the primary tool in FA used to make factors more interpretable?
Rotation
This procedure evaluates difference between observed COV & hypothesized COV matrices
CFA
The problem with this statistic is that it is very sensitive to N
Chi-Square
Which multivariate test statistic is best when homogeneity of variance violated?
Pillai’s Trace
In ANCOVA/MANCOVA, what are "adjusted means"?
Means that have been adjusted for a covariate
Proportion of variability in a measured variable accounted for by the factors as-a-set
post-extraction communality
True or False? In CFA, we want the RMSEA to be high (near 1.00) and the GFI to be low (near 0)
False
A way to adjust for the sensitivity of this test is to
Divide the Chi-Sq by df
What is the multivariate effect size measure? How do we calculate?
1 – Wilks’ lambda
In MANCOVA, how do you request post-hoc tests when you have a main effect of an IV with three or more levels?
“EM Means…” procedure (not Post Hoc…)
Which procedure–orthogonal or oblique–produces additional factor loading matrices
Oblique
The goal of which data reduction technique is to achieve a non significant result?
CFA
The Chi-Square test compares
Observed (r matrix) to Expected (r matrix)