Correlation coefficient lies between__________________?
Correct answer: C. -1 ≤ r ≤ 1
- A. 0 ≤ r ≤ 1
- B. 0 ≤ r ≤ -1
- C. -1 ≤ r ≤ 1
- D. 1 ≤ r ≤ 0
Explanation
Correlation measures the strength and direction of linear association, with -1 representing perfect negative association and +1 perfect positive association. Hence its range is -1 ≤ r ≤ 1.
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