practice

Question 1

r^2 =

Answer 1

SSM/SST
or
1 - SSR/SST

Question 2

In an exploratory factor analysis, what is communality?

Answer 2

The proportion of variance in the original data which is explained by the extracted factors

Question 3

What are two ways of determining the number of factors in a principal components analysis (PCA) or factor analysis?

Answer 3

Inflection in the scree plot and eigenvalues

Question 4

What does principal components analysis (PCA) do?

Answer 4

PCA calculates the covariance between a larger number of variable, to find out which factors best explain variance in the data

Question 5

Which of the following is NOT an assumption of linear regression?

Answer 5

Normality of variables

Question 6

What is the definition of critical qualitative research?

Answer 6

Studying how language affects the social world

Question 7

In a media interview, a researcher makes claims about an areas of research in which they are not an expert, while giving the impression that they are an expert.

This is considered unprofessional conduct. Which BPS ethics principal has the researcher failed to meet?

Answer 7

Competence

Question 8

Which of the following guides animal research ethics?

Nuremburg Code

Declaration of Helsinki

The Three R’s

All of the above

Answer 8

Three R’s

others are human research

Question 9

This plot is used to assess test-retest reliability. What is the name for this type of plot?

Answer 9

Bland-Altman plot

Question 10

Which of these is a succinct summary of principal component analysis?

Answer 10

Reducing a large number of variables into a small number of factors, and rotating the factors for easier interpretation