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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What does the Pearson correlation coefficient measure?
💡 Hint: Think about how two variables change in relation to one another.
Question 2
Easy
What is Spearman's rank correlation used for?
💡 Hint: Consider situations where you are ranking performances.
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 range does the Pearson correlation coefficient fall into?
- 0 to 1
- -1 to 1
- -∞ to +∞
💡 Hint: Think about how correlation can be both positive and negative.
Question 2
Spearman's rank correlation can be used for which type of data?
- Nominal
- Ordinal
- Interval
💡 Hint: Consider how you rank items.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
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.
Question 2
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.
Challenge and get performance evaluation