General Studies · Correlation and Regression
Which of the following statements regarding the correlation coefficient is necessarily true?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The correlation coefficient measures the exact slope of the regression line
- 2The correlation coefficient is a unit-free or dimensionless measure✓
- 3Perfect correlation between two variables implies a causal relationship
- 4Zero correlation implies statistical independence between variables
Correct answer
The correlation coefficient is a unit-free or dimensionless measure
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