Topic 4: Correlation And Regression

Lesson 4.5: Residuals And Significance Of A Correlation Coefficient — Quiz

Test your understanding of lesson 4.5: residuals and significance of a correlation coefficient with 5 practice questions.

Practice Questions

Question 1

What formula is used to calculate a residual in regression analysis?

Question 2

If a residual is significantly positive, what does this imply about the corresponding data point?

Question 3

In order to test the significance of a correlation coefficient, what must be stated first?

Question 4

What does a residual plot help to identify in regression analysis?

Question 5

If the correlation coefficient is found to be -0.85, what does this indicate about the relationship between the two variables?