Correlation - Class XI Economics Quiz
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1. What does correlation measure in statistics?
The average of two variables · The relationship between two variables · The difference between two variables · The sum of two variables
2. Which of the following values indicates a perfect positive correlation?
0 · 1 · -1 · 0.5
3. What is the range of correlation coefficients?
-1 to 1 · 0 to 1 · -2 to 2 · 0 to 100
4. If the correlation coefficient is -0.8, what type of correlation exists?
Perfect positive · Strong negative · Weak positive · No correlation
5. Which method is NOT used to calculate correlation?
Karl Pearson's method · Spearman's rank method · Regression analysis · Method of least squares
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