Soal SMA · Analisis · Kesulitan 3/5
Read the following passage and answer the question. A researcher studied the effect of a new fertilizer on crop yield. In a controlled experiment, plots with the fertilizer yielded 20% more than plots without. However, the researcher later realized that the fertilized plots also received more water due to a broken irrigation system. What is the main flaw in the researcher's experiment?
- A.The fertilizer was not applied correctly.
- B.The yield increase may be due to extra water, not the fertilizer.
- C.The control plots were not given any water.
- D.The experiment lacked a control group.
Kunci jawaban & pembahasan
Jawaban: The yield increase may be due to extra water, not the fertilizer.
The extra water is a confounding variable that could explain the yield difference, undermining the fertilizer's effect.
Mau penjelasan yang menyesuaikan level anak?
Xinau AI membahas soal langkah demi langkah, menyesuaikan gaya bahasa dengan usia anak, dan menyusun latihan berikutnya berdasarkan jawaban sebelumnya.
Coba gratis 30 hari