Samples and Margin of Error

A research team surveys 1001 adults, asking them how many hours they work per week. What is the margin of error for this survey?

• 3%

• 32%

• 63%

• 9%

Tags

CCSS.HSS.IC.B.4

A recent survey found that out of 400 random American adults, 89% pay their bills on time. The margin of error in this survey was 2%. What is the interval of values in which the truth is likely found?

• 89% - 91%

• 87% - 89%

• 87% - 91%

• 388 - 402

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.4

CCSS.HSS.ID.A.4

A research team surveys 200 high schoolers at glenoak. They find that 57% of them drive to school every day. What is the margin of error?

• 95%

• 14%

• 7%

• 3%

Tags

CCSS.HSS.IC.B.4

How do we reduce variability?

• Increase randomness.

• Increase sample size.

• Decrease randomness.

• Decrease sample size.

Tags

CCSS.HSS.IC.B.3

CCSS.HSS.IC.B.5

A newspaper asks its readers to call in and answer the following question, "Are young adults unprepared for college?" What type of sample is this?

• Convenience Sample

• Random Sample

• Voluntary Response Sample

• Call in sample

What does SRS stand for?

• Simple Random Sample

• Survey Random Samples

• Simple Random Survey

• Sample Random Surveys

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

A representative for Macy's walks around the mall interviewing people about their brand perception of Macy's. What kind of sample is this?

• Convenience sample

• random sample

• voluntary response sample

• weighted sample

What is at the beginning of all confidence statements?

• In 95% of random samples

• A statement about the population

• A statement about the sample

• the margin of error

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.4

How do we reduce bias?

• Increase variability

• Increase randomness

• Decrease randomness

• Decrease variability

Tags

CCSS.HSS.IC.B.3

This target depicts what?

• Low bias, low variability

• High bias, low variability

• Low bias, high variability

• High bias, high variability

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.4

CCSS.HSS.ID.A.1

CCSS.HSS.ID.A.2

CCSS.HSS.ID.A.3