Question

Which sample fairly represents the population? Select two options.

measuring the height of every fiftieth person on the school roster to determine the average height of the boys in the school

A.) calling every third person on the soccer team's roster to determine how many of the team members have completed their
fundraising assignment

b.) observing every person walking down Main Street at 5 p.m. one evening to determine the percentage of people who wear
glasses

c.) sending a confidential e-mail survey to every one-hundredth parent in the school district to determine the overall satisfaction
the residents of the town

d.) taking a poll in the lunch room (where all students currently have to eat lunch) to determine the number of students who want
to be able to leave campus during lunch

Answer 1

b) observing every person walking down Main Street at 5 p.m. one evening to determine the percentage of people who wear glasses.

d) taking a poll in the lunch room (where all students currently have to eat lunch) to determine the number of students who want to be able to leave campus during lunch.

Explanation:

These are the two options that are most likely to give you a sample that fairly represents the population. In the first case, the sample that you obtain is likely to be a good representation because Main Street is a road where a great variety of people walk. Moreover, 5 pm is also a time that will allow you to see a great number of different people. The second answer will also give you a good sample, as the poll would include all students in the lunch room, which is all students in the school (the whole population).