Soal SMA · Soal cerita · Kesulitan 4/5
A study finds that people who drink coffee daily have a lower risk of heart disease. However, coffee drinkers are also more likely to exercise regularly. What is the best way to describe the relationship between coffee and heart disease?
- A.Coffee directly causes lower heart disease risk.
- B.Exercise is a confounding variable that may explain the association.
- C.Coffee drinking is a result of good health.
- D.The study is invalid because it did not measure exercise.
Kunci jawaban & pembahasan
Jawaban: Exercise is a confounding variable that may explain the association.
Exercise, associated with both coffee drinking and heart health, could confound the observed relationship.
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