Soal SMA · Analisis · Kesulitan 3/5
Read the following passage and answer the question. A city introduced a bike-sharing program to reduce traffic. After implementation, traffic congestion decreased by 10%. However, the city also increased bus frequencies and lowered bus fares at the same time. An analyst wants to determine the bike-sharing program's specific effect. Which of the following methods would best isolate the effect of the bike-sharing program?
- A.Compare traffic before and after the bike-sharing program.
- B.Compare cities with and without bike-sharing programs, controlling for other factors.
- C.Survey cyclists about their satisfaction.
- D.Count the number of bikes used daily.
Kunci jawaban & pembahasan
Jawaban: Compare cities with and without bike-sharing programs, controlling for other factors.
A controlled comparison with other cities helps isolate the bike-sharing effect by accounting for simultaneous changes like bus improvements.
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