Question

which of the following would be good to survey to determine the 5th grades favorite books? 5 students from each of the 6 5th grade classes 10 students in a 5th grade class 15 5th graders that sit together at lunch all 100 5th graders in the school

Explanation:

Step1: Understand sampling principles

A good survey for determining the 5th - grade's favorite books should be representative.

Step2: Analyze each option

• Option 1: 5 students from each of 6 classes. Total \(5\times6 = 30\) students. But only a small part of the 5th - grade.
• Option 2: 10 students in a 5th - grade class. Only represents one class.
• Option 3: 15 5th - graders that sit together at lunch. A specific group (friends who sit together) which may not be representative.
• Option 4: All 100 5th - graders in the school. This is the most comprehensive and representative sample.

Answer:

All 100 5th graders in the school.