Moderate

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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