Practice - Simple and Multiple Linear Regression
Practice Questions
Test your understanding with targeted questions
Define what a dependent variable is.
💡 Hint: It's what you're trying to predict.
What is the role of an independent variable in regression?
💡 Hint: Think of it as an ingredient in a recipe.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does the slope (β1) represent in a simple linear regression?
💡 Hint: Think about how the independent variable impacts the dependent variable.
True or False: In linear regression, it is acceptable to have multicollinearity among independent variables.
💡 Hint: Consider how related predictors might complicate interpretation.
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Challenge Problems
Push your limits with advanced challenges
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.
💡 Hint: Look for which predictor has the highest coefficient.
Explain how a violation of the homoscedasticity assumption can affect your model's predictions.
💡 Hint: Consider how varied error might mislead predictions.
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Reference links
Supplementary resources to enhance your learning experience.