Practice - Correlation and Regression
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Practice Questions
Test your understanding with targeted questions
What does the Pearson correlation coefficient measure?
💡 Hint: Think about how two variables change in relation to one another.
What is Spearman's rank correlation used for?
💡 Hint: Consider situations where you are ranking performances.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What range does the Pearson correlation coefficient fall into?
💡 Hint: Think about how correlation can be both positive and negative.
Spearman's rank correlation can be used for which type of data?
💡 Hint: Consider how you rank items.
1 more question available
Challenge Problems
Push your limits with advanced challenges
You survey 10 students and find their study hours and exam scores as follows:
Study Hours: [1, 2, 3, 4, 5, 1, 2, 3, 4, 5]
Scores: [55, 60, 65, 70, 75, 50, 55, 60, 65, 70]. Calculate the Pearson correlation coefficient.
💡 Hint: Apply the formula for Pearson's coefficient.
In a class of 4, two students have ranks based on their exam results as follows: Student A: [1, 2, 1, 2], Student B: [2, 1, 2, 1]. Calculate Spearman's rank correlation.
💡 Hint: Calculate the differences of the ranks and apply the Spearman’s formula.
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Reference links
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