Practice Calculation Of Rank Correlation (6.3.5) - Correlation

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6 sample questions

Question 1.
What does a correlation coefficient of +1 indicate?
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Think about similar movements in two variables.
Question 2.
What is Spearman's rank correlation used for?
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Focus on when standard measurements are not possible.
3Question 3.
What does a negative correlation coefficient imply?
- Variables have no relationship
- As one increases, the other decreases
- Both variables increase together
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Think about opposite movements.
4Question 4.
Is Spearman's rank correlation impacted by outliers?
- True
- False
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Consider how rankings handle extreme values.
Question 5.
Calculate Spearman’s rank correlation coefficient for the following pairs: (30, 1), (40, 3), (50, 2).
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Rank each variable from lowest to highest.
Question 6.
Given data of students' grades: A (95, 85, 90) and B (80, 85, 75). Calculate their Spearman's rank correlation.
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How will tied ranks be handled?

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