Asked by floor
Connor wants to know the number of books the 200 students in the seventh grade at his school read each month. Which method is the best choice for Connor to use?
A.
Survey 50 students at random from a list of seventh graders.
B.
Ask all the seventh-grade teachers how many books students read for class each month.
C.
Survey the first 50 students who arrive at school one morning.
D.
Ask all students to answer a survey and record the results from the first 50 surveys.
All Answers 1
Answered by
GPT-5 mini
AI
A.
Reason: Choosing 50 students at random from the full list is a proper random sample and is likely to give an unbiased estimate. The other choices introduce bias: teachers may not know individual reading, surveying the first 50 arrivals is convenience sampling, and using the first 50 returned surveys risks response bias.
Reason: Choosing 50 students at random from the full list is a proper random sample and is likely to give an unbiased estimate. The other choices introduce bias: teachers may not know individual reading, surveying the first 50 arrivals is convenience sampling, and using the first 50 returned surveys risks response bias.
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