PRC-2 · Chapter 10 · Question 59 of 60
If a set of data yields a flat regression equation of Y = 25 + 0X, what must be the mathematical value of the correlation coefficient (r)?
Test yourself: pick an answer
Reveal answer & explanation
Correct answer: B) 0
Explanation
A calculated slope (b) of exactly 0 mathematically indicates that changes in X have absolutely no predictive effect on Y, resulting in a flat horizontal line. This strictly implies there is zero linear correlation (r = 0).
More Correlation and Regression MCQs
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