Multivariate Data Analysis (MVDA) Practice Exam (version A)
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Grado
Multivariate data analyse (6462PS009Y)
Institución
Universiteit Leiden (UL)
This practice exam was made for the MDVA course in 2023, after the exam in June. I used the lecture slides and literature by Peter de Heus to create the questions. The outputs are taken from the MVDA workbook, but I have made some changes in them. I tried to create an exam similar to the one in Jun...
This practice exam was made for the MDVA course in 2023, after the exam in June.
There are 30 multiple-choice questions. For each question, out of the 4 alternatives only one is
correct. Complete it in 2 hours if you want to have the actual exam’s experience.
The answers and explanations are at the end of the document.
The questions begin on the next page.
Good luck :)
,1. Consider the following output. What is the value of the F-test?
a) 37.971
b) 37.770
c) 1.381
d) 14.551
2. This graph displays the standardized residuals against the predicted values of a dataset.
Which assumptions of multiple regression analysis are met?
a) only linearity
b) only homoscedasticity
c) both linearity and homoscedasticity
d) neither linearity not homoscedasticity
3. How much overlap is there in variance accounted for between Extroversion and Age in
Model 3?
a) 0.436
b) 0.075
c) 0.832
d) 0.842
, 4. What does multicollinearity mean?
a) all predictors correlate highly with the dependent variable
b) two or more predictors correlate highly with each other
c) two or more predictors correlate highly with the dependent variable
d) the variance of the dependent variable is the same in all groups
5. The following output depicts the result of a study on the influence of teaching method (AM
= Arithmetic & Math, WN = A World of Numbers) and gender (boy, girl) on the performance
on an arithmetic test (test score). The researchers find that that the main effects are both
significant, but the interaction effect is not. Which interpretation of the estimated marginal
means is correct?
a) on average, the AM method yields better test scores for boys than for girls
b) on average, the WN method yields better test scores for girls than for boys
c) on average, girls perform better on the test than boys
d) on average, the WN method yields better test scores
6. A researcher is interested in the effect of gender (male, female), metropolitan size (large
city, small town) and age (young adult, adult > 25) on the use of social media apps. The latter
is measured by the average hours per month that users are active on social media. The results
of this 2 × 2 × 2 factorial ANOVA can be depicted with the following plots. Which of the
following interpretations is correct about these plots?
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