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
calling every third person on the soccer team's roster to determine how many of the team members have completed their
fundraising assignment
observing every person walking down Main Street at 5 p.m. one evening to determine the percentage of people who wear
glasses
sending a confidential e-mail survey to every one-hundredth parent in the school district to determine the overall satisfaction a
the residents of the town
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
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Ответ:
Option 1:
Measuring the heights of every fiftieth person on the school roster to determine the average heights of the boys in the school
Comment: this might not be a good idea for fairness as we only wish to determine average height of the boys. Taking a group of 50 people randomly, might not give us the same number of boys every time.
Option 2:
Calling every third person on the soccer team’s roster to determine how many of the team members have completed their fundraising assignment
Comment: The context doesn't seem to need a sampling. The number of players in a soccer team is considerably small. We can find exact data by asking in person.
Option 3:
Observing every person walking down Main Street at 5 p.m. one evening to determine the percentage of people who wear glasses
Comment: To get a more accurate result and fairer sampling, the period of observing could have been longer, for example, observing for 12 hours on that day, or an alternative is to observe at 5 pm for 7 days in a row. It could happen that no one walking down the Main street precisely at 5 pm wears glasses, or it could happen the other way around.
Option 4:
Sending a confidential e-mail survey to every one-hundredth parent in the school district to determine the overall satisfaction of the residents of the town 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.
Comment: This sampling does fairly represent the population, although it might be an idea to scale down the sample population, i.e. every fiftieth parent.
Option 4
Ответ:
Explanation:
well it is both, its all on your perspective. on the one hand, the poor fool who bought the painting lost 1.4 million dollars, so in his eyes it was vandalism. However it was also art because first of all his art was his so he had a right to destroy it. and he also destroyed it in a way that was spectacular and beautiful, and tragic. and now all of the sudden its a new art piece, this one sadder.