Practice Types Of Relationship (6.2) - Correlation - CBSE 11 Statistics for Economics

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6 sample questions

Question 1.
Define correlation in your own words.
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Think about how changes in one variable affect another.
Question 2.
What does a scatter diagram represent?
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Consider what happens when you plot data points.
3Question 3.
What does a positive correlation imply?
- A: Both variables go up together.
- B: One variable goes up while the other goes down.
- C: There is no relationship.
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Think about what 'positive' means in everyday language.
4Question 4.
Spearman’s rank correlation is preferred when:
- True
- False
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Is Spearman used for rank data?
Question 5.
Analyze data provided for studying hours and grades for a class of students. Calculate the correlation coefficient and interpret the relationship.
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Use the formula: r = Σ(XY) - (ΣX)(ΣY)/N.
Question 6.
Given a scenario where temperature and ice cream sales data is collected, draw a scatter plot and analyze the correlation.
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Look for the overall trend in the scatter points.

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