Question

a math teacher wants to find out the average number of hours his students spend working on their math homework for his class each week. which group would best represent a sample of the population?
o the first 30 students who enter the school building one morning
o 30 students selected from the lunchroom
o 30 students selected from his class rosters
o 30 students who stay after school for football practice

Explanation:

To find a representative sample of students for determining the average number of hours spent on math homework, the sample should be from the teacher's class. Selecting from class rosters ensures the sample is from the relevant population (the teacher's students). Selecting students who enter the school building (could be any students, not just the teacher's class), from the lunchroom (again, not specific to the teacher's class), or who stay after school for football (a non - academic, specific - activity group) are not representative of the teacher's entire class for math homework hours.

Answer:

30 students selected from his class rosters.