PRC-2 · Chapter 10 · Question 60 of 60
If the slope 'b' in a calculated regression equation is a negative number, what must inherently be true about the correlation coefficient 'r'?
Test yourself: pick an answer
Reveal answer & explanation
Correct answer: C) It must also be negative.
Explanation
The mathematical sign of the regression slope (b) and the correlation coefficient (r) must always strictly match. If the line slopes downward (negative b), it inherently reflects an inverse relationship (negative r).
More Correlation and Regression MCQs
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