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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Define correlation.
💡 Hint: Think about how two things relate to each other.
Question 2
Easy
What does a positive correlation mean?
💡 Hint: Consider variables that typically rise together, like income and expenditure.
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 is the range of Pearson's correlation coefficient?
- 0 to 1
- -1 to 1
- -∞ to ∞
💡 Hint: Visualize the graph showing extremes.
Question 2
Are correlation and causation the same?
- True
- False
💡 Hint: Think of examples where two events occur together without cause.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Calculate the Karl Pearson’s coefficient for the following sets of data on the heights and weights of students: Heights (in cm) = [150, 160, 170, 180] and Weights (in kg) = [50, 60, 65, 70].
💡 Hint: Remember to standardize using the variance.
Question 2
Discuss a case where correlation was mistaken for causation in marketing data and explain the consequences.
💡 Hint: Reflect on the importance of critical analysis of data before conclusions.
Challenge and get performance evaluation