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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What does covariance measure?
💡 Hint: Think about whether they increase or decrease together.
Question 2
Easy
What is the correlation coefficient range?
💡 Hint: Consider the extreme values it can take.
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 positive covariance indicate?
- Variables increase together
- Variables decrease together
- No relationship
💡 Hint: Think about how both variables interact.
Question 2
The correlation coefficient can only be found between which two values?
- -1 and 0
- 0 and 1
- -1 and 1
💡 Hint: Recall the extremes of correlation.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Consider two datasets: A = {10, 20, 30, 40, 50} and B = {5, 15, 25, 35, 40}. Calculate the covariance and correlation. Discuss their implications.
💡 Hint: Don't forget to calculate means first and standard deviations while solving.
Question 2
You are analyzing the height and weight of a sample of plants. The covariance between height and weight is found to be positive. What does this suggest about their relationship, and how might environmental factors play a role?
💡 Hint: Consider the biological growth environments that affect both height and weight.
Challenge and get performance evaluation