Question

The correlation coefficient for blood pressure and amount of vegetables eaten in a group of people is −0.7. Analyze the following statement:

High blood pressure is caused by not eating vegetables.

Is this a reasonable conclusion?

Answer 1

No; even though there is a strong negative correlation, not eating vegetables doesn't necessarily cause high blood pressure

Explanation:

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Answer 2

The correlation coefficient for blood pressure and amount of vegetables eaten which is a negative number (-0.7) suggests that they are in inverse relation. Eating more vegetable should lower the blood pressure. In the same manner, not eating vegetables would likely cause high blood pressure.