Soal SMA · Latihan campuran · Kesulitan 4/5
A study finds that students who eat breakfast score higher on tests. Which additional piece of evidence would most strengthen the causal claim?
- A.A survey showing most students like breakfast.
- B.A controlled experiment where one group is randomly assigned to eat breakfast and another is not.
- C.Data showing breakfast is cheaper than lunch.
- D.Testimonials from teachers who eat breakfast.
Kunci jawaban & pembahasan
Jawaban: A controlled experiment where one group is randomly assigned to eat breakfast and another is not.
A randomized controlled experiment can establish causation by controlling confounding variables.
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