Sampling: Good or Bad

Haley surveys middle school students about what movies they like. She then estimates that 16,000 people in her town like action movies based on this survey. Is this estimate accurate?

• Yes, because the group surveyed is random.

• No, because the group surveyed is random.

• Yes, because the group surveyed is all a certain age and may be biased.

• No, because the group surveyed is all a certain age and is most likely biased.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Students do a survey to find people's favorite sports. They ask random people at the mall and estimate 14,000 in their town like football. Is this estimate accurate?

• No, because the group they studied is random.

• No, because the group is a specific group and may be biased.

• Yes, because the group is a specific group and may be biased.

• Yes, because the group is random.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

A school randomly chose ten English teachers and asked them which type of juice their students would prefer. Which reason best shows why this sample is biased?

• The sample didn't include students.
• The sample is too small.
• The sample can only be accurate if each teacher is included in the sample

Tags

CCSS.RL.11-12.6

Why do we randomly select our samples?

• for control
• reduce bias
• so we don't get the same answers from everyone
• to eliminate confounding results

Tags

CCSS.HSS.IC.B.3

Marianne wanted to know students' opinion on the new schedule at school. She places students' names in a container and randomly picks out 20 names. 

• Convenience Sampling
• Systematic Random Sampling
• Simple Random Sampling
• Volunteer response

Tags

CCSS.HSS.IC.B.3

Source of bias that occurs when you ask people who are EASY to ask

• Response Bias

• Convenience Sampling

• Nonresponse

• Voluntary Response

Tags

CCSS.HSS.IC.B.3

Source of bias in which people CHOOSE to respond and usually only people with very strong opinions respond

• Response Bias

• Undercoverage

• Convenience Sampling

• Voluntary Response

Tags

CCSS.HSS.IC.B.3

A marketing research company wants to know if the new iOS has forced iPhone users to upgrade to the newest version of the iPhone because the new operating system slows down their current version. 

They take a simple random sample of 10,000 iPhone users from the registered iPhone accounts at Verizon stores across the country.

What is the population of interest in the marketing research company's study?

• All iPhone users

• All registered iPhone users from Verizon stores in the U.S.

• All smartphone users

• 10,000 registered iPhone users from U.S. Verizon stores

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

A marketing research company wants to know if the new iOS has forced iPhone users to upgrade to the newest version of the iPhone because the new operating system slows down their current version. 

They take a simple random sample of 10,000 iPhone users from the registered iPhone accounts at Verizon stores across the country.

What is the sample used in the marketing research company's study?

• All iPhone users

• 10,000 registered iPhone users from U.S. Verizon stores

• All smartphone users

• All iOS users

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Identify the type of sampling is used:

A school bus driver asks the first 10 students who enter their bus if they want assigned seats or not.

• Random sampling

• Voluntary Response sampling

• Convenience sampling

• Cluster sampling

• Systematic sampling

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1