Practice Case 2: Ranks Not Given (6.3.5.2) - Correlation

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6 sample questions

Question 1.
What is correlation?
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Think about how two things might affect each other.
Question 2.
What is positive correlation?
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Consider studies related to health and lifestyle.
3Question 3.
What does a correlation of +1 indicate?
- No correlation
- Perfect positive correlation
- Negative correlation
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Remember the implication of high correlation values.
4Question 4.
True or False: Correlation implies causation.
- True
- False
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Refer to earlier discussions about correlation vs. causation.
Question 5.
Given the following data, calculate the Pearson correlation coefficient: (X: [1, 2, 3, 4, 5], Y: [5, 4, 6, 5, 7]).
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Use the correlation formula involving means and standard deviations.
Question 6.
Analyze the correlation between hours studied and exam scores based on your classmates’ inputs. Report the correlation coefficient and its implications.
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Look for patterns in your data.

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