Practice Positive Correlation (10.2.1) - Correlation Analysis

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9 questions

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2 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is positive correlation?
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Think about two things that improve together.
Question 2.
Give one example of positive correlation from daily life.
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Consider health-related activities.
3Question 3.
What happens in positive correlation?
- One variable decreases
- Both variables increase
- One variable remains constant
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Remember the definition of positive correlation.
4Question 4.
True or False: A correlation coefficient of -0.5 indicates a strong positive correlation.
- True
- False
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Check the correlation coefficient range.
Question 5.
Analyze the correlation between hours of study and exam scores based on a dataset. If the correlation coefficient is +0.85, what does this imply?
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Remember the strength indicators of the correlation coefficient.
Question 6.
Given a case study where company revenue increases with marketing spend, calculate the correlation coefficient if the data shows a perfect relationship.
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Think about what a perfect relationship would look like.

5 more questions in this section. Enroll free to practise them all.