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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Define what a dependent variable is.
π‘ Hint: It's what you're trying to predict.
Question 2
Easy
What is the role of an independent variable in regression?
π‘ Hint: Think of it as an ingredient in a recipe.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What does the slope (Ξ²1) represent in a simple linear regression?
- The Y-intercept
- The change in Y for a change in X
- The error in the prediction
π‘ Hint: Think about how the independent variable impacts the dependent variable.
Question 2
True or False: In linear regression, it is acceptable to have multicollinearity among independent variables.
- True
- False
π‘ Hint: Consider how related predictors might complicate interpretation.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Create a multiple linear regression model using hours studied, previous test scores, and attendance rates as predictors for predicting final exam scores. Analyze the output coefficients.
π‘ Hint: Look for which predictor has the highest coefficient.
Question 2
Explain how a violation of the homoscedasticity assumption can affect your model's predictions.
π‘ Hint: Consider how varied error might mislead predictions.
Challenge and get performance evaluation