Question

1. a researcher wants to determine the average time students spend on homework. which of the following would be the most representative sample?

a. surveying only students who are failing classes
b. surveying students from various grade levels, academic abilities, and backgrounds
c. surveying only students in advanced classes
d. surveying only students who volunteer to participate

Explanation:

To determine the average time students spend on homework, a representative sample should include a diverse group. Option A (failing classes) and C (advanced classes) are biased toward specific academic performance groups. Option D (volunteers) is a voluntary response sample, which is also biased. Option B includes students from various grade levels, academic abilities, and backgrounds, making it the most representative as it captures a wider range of students, reducing bias.

Answer:

B. Surveying students from various grade levels, academic abilities, and backgrounds