Imagine Dr. Martin finds that a sense of humor is positively correlated with psychological well-being. From this, we can conclude that:
a. humor causes people to be healthier.
b. health causes people to be funnier.
c. people who have a good sense of humor tend to be healthier.
d. people who have a good sense of humor tend to be less healthy.
Answer: C
Rationale: When two or more variables are positively correlated, their relationship is direct—they increase or decrease together.
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