Economics · Correlation Analysis
Which one of the following expressions is NOT correct to calculate the coefficient of correlation (r) between two variables x and y?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Cov(x, y)σx · σy
- 2Cov(x, y)σx2 · σy2✓
- 3√(byx · bxy)
- 4∑ x yN · σx · σy
Correct answer
Cov(x, y)σx2 · σy2
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