6. Data Analysis and Modeling
Linear Regression — Quiz
Test your understanding of linear regression with 5 practice questions.
Practice Questions
Question 1
Which of the following best describes the meaning of a positive slope in a simple linear regression model?
Question 2
What does it mean if the residuals in a linear regression model are randomly scattered around zero?
Question 3
If a simple linear regression model has the equation $y = -3x + 7$, what is the predicted value of $y$ when $x = 4$?
Question 4
Which of the following describes the role of the intercept in a simple linear regression equation $y = mx + b$?
Question 5
A linear regression model has a slope of $0.5$ and an intercept of $2$. What is the predicted value of the dependent variable when the independent variable is $6$?