PRC-2 · Chapter 10 · Question 32 of 60
Which of the following correctly defines the mathematical range within which the Pearson correlation coefficient (r) must always lie?
Test yourself: pick an answer
Reveal answer & explanation
Correct answer: C) -1 to +1
Explanation
The correlation coefficient (r) is an index of linear relationship strength that is mathematically bounded. It can never exceed +1 (perfect positive correlation) and can never drop below -1 (perfect negative correlation).
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