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41 votes
The principal at Marina Middle School wants to determine if the 120 students in the seventh grade prefer to visit the aquarium or the science museum for their end-of-year trip. Select all the sets of people that would be a representative sample of the population.

20 sixth-grade students, 20 seventh-grade students, and 20 eighth-grade students
10 seventh-grade boys and 10 seventh-grade girls
25 seventh-grade students
15 seventh-grade boys and 5 teachers
25 students from the school

help me solve this please

User Shiya
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1 Answer

18 votes
18 votes

Answer:

10 seventh-grade boys and 10 seventh-grade girls

25 seventh-grade students

Explanation:

Sampling

This is a common statistics practice, when we want to study something from a population, we find a sample of this population. This sample has to be representative.

In this question:

Students in the seventh grade prefer to visit the aquarium or the science museum for their end-of-year trip.

So the sample would have to contain only students from the seventh grade. So the correct options are:

10 seventh-grade boys and 10 seventh-grade girls

25 seventh-grade students

User Sanchia
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