Bias Practice

Researchers want to know how popular reading is among residents of Pflugerville. They go to the local public library ask every 10th person who enters if they like to read. Is the survey biased? If so, what type of bias is present?

• Not biased

• Yes, Response Bias

• Yes, Undercoverage Bias

• Yes, Non-response bias

Determine if the following study is biased, and if so, what type of bias.

Carlos wants to know the favorite sport of people at his school so he asks his baseball team.

• Not biased

• Yes, Voluntary Response

• Yes, Non Response

• Yes, Undercoverage Bias

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

CCSS.HSS.IC.B.6

Determine if the following question is biased, and if so, what type of bias is present.

"Are stoplights needed at the intersection of Main and Perry Streets?"

• Not biased

• Yes, Response bias

• Yes, Voluntary Response Bias

• Yes, Non Response Bias

Is the following question biased? Why or why not?

"To see who has a computer at home, the front office asks 10 randomly chosen students from each grade."

• Yes, because it favors the responses from one grade over the others

• Yes, because it is a random sample.

• No, because it is a random sample.

• No, because most students have computers.

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

When you select a sample that does is not representative of the population, what type of bias are you likely to encounter?

• Non-response bias

• Undercoverage bias

• Response bias

• Voluntary response bias

Answer explanation

If it is not representative of the population, someone is getting left out, meaning the sample is not covering everyone!

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

Emily, a supermarket employee, approached 50 random customers and asked whether they would be willing to discuss what they like most about the store as she wants to know how the shoppers view her store. She interviewed the 22 who said yes. Select all reasons that there may be bias present. (You should have more than one answer!)

• Only 22 people answered the question, the ones who didn't may have different opinions from those who did.

• Emily did not select a good sample.

• Emily is an employee, so some guests may not want to truthfully answer.

• Emily needed to consider the entire city's opinion on the grocery store.

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

Which scenario would produce the least biased results?

• asking athletes at a gym what their favorite television show is

• asking fans at a baseball game who their favorite baseball team is

• asking shoppers at a store where their favorite place to shop is

• asking students in a college library what their favorite college sports team is

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

Which sample is more likely to represent the population of Pflugerville Middle School accurately?

• Ms. Zimmerman selected all students in her Advanced Geometry class to survey.

• Mr. Clayton asked students he saw in the office to complete a survey.

• Mr. Bennett asked students in choir to complete a survey

• Mr. Clayton asked every 13th person walking in before school until he had 100 students.

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

Which type of bias occurs when some groups of populations are LEFT OUT of the selection process?

• Voluntary Response Bias

• Non Response Bias

• Response Bias

• Undercoverage Bias

Which type of bias involves respondents answering questions in a way that they think will lead to being accepted and liked?

• This is a type of response bias

• This is a type of undercoverage bias

• This is a type of non-response bias

• This is a type of Non-random bias