Chapter 7 Week 1 - Formative test

A formative test helps you assess your progress in the course, and helps you address any blind spots in your understanding of the material. If you get a question wrong, you will receive a hint on how to improve your understanding of the material.

Complete the formative test ideally after you’ve seen the lecture, but before the lecture meeting in which we can discuss any topics that need more attention.

Question 1: In the equation \(Y_i = a + bX_i + e_i\), what are the ‘model parameters?’

\(Y_i, X_i\) and \(e_i\)

\(a\) and \(b\)

\(Y\) and \(X\)

\(a\) and \(bX_i\)

Question 2: Multiple regression and ANCOVA are statistically equivalent.

FALSE

TRUE

Question 3: The error term (\(\epsilon_i\)) in regression equations reflects how much the observed scores of individuals differ from their predicted scores.

FALSE

TRUE

Question 4: A model with more degrees of freedom is…

more complex

more simple

Question 5:

What kind of model is depicted above?

A measurement model

ANOVA with dummies

Multiple regression

A path model

Question 6: What are degrees of freedom?

The number of unique pieces of information minus number of parameters

Number of participants minus number of parameters

The number of unique pieces of information

The number of parameters

Question 7: A psychologist administers a test intended to measure intelligence. Participants complete different puzzles and answer different questions. From a measurement theory point of view, what kind of variable is intelligence in this context?

A measurement variable

An observed variable

A dependent variable

A latent variable

Question 8: A model with more degrees of freedom will…

fit the data better

fit the data worse

Question 9: In OLS regression, a model is fit to the individual participant data. By contrast, regression in structural equation modeling fits a model to the observed covariance matrix.

FALSE

TRUE