Soal SMA · Soal cerita · Kesulitan 4/5
A study found that students who ate breakfast scored higher on tests than those who skipped breakfast. However, the study also noted that breakfast eaters tended to have higher family incomes. What is the most critical flaw in concluding that breakfast causes higher test scores?
- A.The study did not measure test scores accurately.
- B.Family income is a confounding variable that could affect both breakfast habits and test scores.
- C.The sample size was too small to draw any conclusion.
- D.Breakfast eaters might have eaten unhealthy foods.
Kunci jawaban & pembahasan
Jawaban: Family income is a confounding variable that could affect both breakfast habits and test scores.
Higher family income could independently influence both the likelihood of eating breakfast and test performance, confounding the relationship.
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