Question

The high school band director plans to survey his students about the music he should select for their spring concert. Which group would provide the best representative sample?

15 girls from all band levels
20 members of the freshman band
22 jazz band members
5 members from each of the 4 grade-level bands

Answer 1

Ans. 5 members from each of the 4 grade-level bands.

Basing on the data provided, all other factions were already categorized to a specific group which will not provide a realistic data. Having representatives per level bands will bridge the gap of unbiased survey analysis.