PRC-2 · Chapter 10 · Question 6 of 60
If a researcher adds 3 to each observation of X, and subtracts 5 from each observation of Y, what happens to the original correlation coefficient of 0.85?
Test yourself: pick an answer
Reveal answer & explanation
Correct answer: C) It remains exactly 0.85.
Explanation
The correlation coefficient (r) is independent of the change of origin. Adding or subtracting constants to either variable X or Y leaves 'r' completely unchanged.
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