Soal SMA · Analisis · Kesulitan 4/5
A researcher concludes that a new teaching method improves test scores based on a study where students were not randomly assigned to groups. What is the main threat to the validity of this conclusion?
- A.The sample size was too large.
- B.Selection bias due to lack of random assignment.
- C.The test scores were not standardized.
- D.The teaching method was too innovative.
Kunci jawaban & pembahasan
Jawaban: Selection bias due to lack of random assignment.
Without random assignment, pre-existing differences between groups may explain the results, introducing selection bias.
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