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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What does a positive covariance indicate?
💡 Hint: Think about the behavior of the variables.
Question 2
Easy
What is the range of the correlation coefficient?
💡 Hint: Consider the extremes in terms of relationships.
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 covariance of 0 indicate?
- Positive relationship
- Negative relationship
- No linear relationship
💡 Hint: Consider what zero implies about direction.
Question 2
True or False: A correlation of -1 indicates a perfect positive correlation.
- True
- False
💡 Hint: Recall how the scale of correlation works.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Given two random variables, X = {5, 10, 15} and Y = {1, 2, 3}, compute both the covariance and correlation and assess the strength of their relationship.
💡 Hint: Use standard deviation and means in your calculations.
Question 2
In a real-world scenario, how would you interpret a high positive correlation between temperature and ice cream sales?
💡 Hint: Consider the practical implications of seasonal businesses.
Challenge and get performance evaluation