Statistics Quiz Review Lessons 3.1-3.4

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.B.4

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

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

How do we reduce variability?

• Increase randomness.

• Increase sample size.

• Decrease randomness.

• Decrease sample size.

How do we reduce bias?

• Increase variability

• Increase randomness

• Decrease randomness

• Decrease variability

Tags

CCSS.HSS.IC.B.3

Why is a sample of 1000 people better than a sample of 100 people?

• It reduces the margin of error.

• It decreases bias.

• Having more people is always better.

• More people means that our results are more accurate.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

A study by the department of education in a certain state found that there was a mean SAT score of 534 with a margin of error of 20.

Which score(s) would fall outside the confidence interval?

• 505

• 530

• 550

• 558

Tags

CCSS.HSS.IC.B.4

This sample consists of the entire population

• convenience
• census
• cluster
• simple

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

This sample consists of units of the population that are easily accessible.

• Cluster
• Convenience
• Volunteer
• Observational

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

This sample consists of units of the population that chose to respond.

• mandatory
• census
• volunteer
• unbiased

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Identify the sampling design: Mr. Rhoades puts all of his students' names in a hat and randomly selects one without looking.

• cluster
• volunteer
• systematic
• simple random

Tags

CCSS.HSS.IC.B.3