Linear Regression

Question 1

A Linear regression determines whether the linear regression between two variables is…

Answer 1

Statistically significant

Question 2

A linear regression determines how much variation in the DV is explained…

Answer 2

By the IV

and the direction/magnitude of relationship

Question 3

A linear regression allows you to predict…

Answer 3

Values of the DV based on different values of the IV

Question 4

Residuals are…

Answer 4

Difference between actual value of DV and the predicted value

Question 5

Residuals can be visualised on a…

Answer 5

Scatterplot

Question 6

You would use a scatterplot to

Answer 6

Visualise residuals

Question 7

Residuals are calculated by

Answer 7

Predicted value - observed value

Question 8

Predicted value - observed value

This is how you calculate

Answer 8

Residuals

Question 9

To get the most predictive power on a scatterplot, we must…

Answer 9

Draw the LOFB in the best place possible

Question 10

How is linear regression different to a correlation?

Answer 10

LR answers:

How much will Y change if X changes by a certain amount?

Question 11

The DV is known as the _____/_____ variable

Answer 11

Outcome/criterion