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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What does it mean if Pearson's correlation coefficient r is 0?
💡 Hint: Think about how two variables may relate to each other.
Question 2
Easy
Where do the regression lines intersect?
💡 Hint: Consider the average of both variables.
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 a correlation coefficient value of 0 imply?
- True
- False
💡 Hint: Remember how r indicates relationships between variables.
Question 2
Where do the two regression lines intersect?
💡 Hint: Think of averages for both variables.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
You have a dataset with r = 0.8. How would you interpret this in the context of a predictive model?
💡 Hint: Think about relationship strength and prediction reliability.
Question 2
Explain the potential consequences of using a regression model with r = 0 for forecasting sales.
💡 Hint: Consider the implications of no correlation in sales trends.
Challenge and get performance evaluation