A product moment correlation coefficient of is found for a sample. What does this suggest?
Answer and explanation
Correct answer: A. There is strong negative linear correlation between the variables
- Step 1: The sign gives the direction: negative. Step 2. The magnitude is close to 1, so the linear relationship is strong. Answer: There is strong negative linear correlation between the variables. Why not the others: 0.9 is not weak; the sign is negative not positive; correlation alone never proves causation.
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