Sampling Methods Answers

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Cheryl wants to find the number of hours seventh-graders do homework each week. There are 297 girls and boys in seventh grade. Which is the best way for Cheryl to get a representative sample without spending too much time?

A
She can survey 15 of her friends in the school.
B
She can survey every sixth-grade student in the school.
C
She can randomly survey 50 girls in the entire school.
D
She can randomly survey 50 seventh-graders in the school.
4

Which statement(s) describe her sampling method? Check all that apply.

A
Her method will produce a biased sample.
B
Her method will produce a valid sample.
C
Her method will produce a random sample.
D
Her method will produce a representative sample.
E
Her method will produce an invalid sample.
5

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6

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7

likely to result in a biased sample.

A
Alana’s method is
B
Ramiro’s method is
C
Both methods are
D
Neither method is
10

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11

Sample response: The newspaper publisher should check a random sample of the newspapers to avoid a biased sample. The sample needs to be large enough to be representative of the population. Which of the following ideas did you include in your response? Select all that apply.The publisher should select a random sample of the newspapers and check them.The publisher should check enough but not all of the papers to get a representative sample.The publisher should be careful to select papers at rando

A
The publisher should select a random sample of the newspapers and check them.
B
The publisher should check enough but not all of the papers to get a representative sample.
C
The publisher should be careful to select papers at random to avoid getting a biased sample.

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Sampling Methods Answers — Common Core Math 7…