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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What does the variable y represent in the regression equation?
💡 Hint: Think of what you want to measure.
Question 2
Easy
What is the purpose of the intercept (β0)?
💡 Hint: What happens when your predictor is at its base level?
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 β1 indicate in a regression equation?
- Change in y for every unit increase in x
- Initial value of y when x is zero
- Error in the prediction
💡 Hint: Think about how y responds to changes in x.
Question 2
TRUE or FALSE: The intercept β0 represents the point where the regression line crosses the x-axis.
- True
- False
💡 Hint: Consider the y-values when x is zero.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Consider a regression equation: y = 5 + 4x + ε. If x represents years of education, interpret the value of the slope.
💡 Hint: Think about how education transforms other variables in real life.
Question 2
Given a scenario where we are using linear regression to predict offline sales based on in-store promotions, if the intercept β0 is 50, interpret what this means in practical terms.
💡 Hint: What does the base figure suggest about your business model?
Challenge and get performance evaluation