9.3 Collecting Data A2

Determine if the following study is biased.

A public library asked every 10th person who entered to name the type of book they were getting.

• A. Biased

• B. Unbiased

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Determine if the following study is biased.

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

• A. Biased

• B. Unbiased

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Ana wants to know the average student’s opinion of the tardy policy at her school. Which group of students should she survey in order to achieve the most accurate results?

• A. Thirty randomly selected students from her school

• B. Thirty students who are rarely tardy

• thirty of her friends

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

Marcos wants to find out how many students at his school like to go to the movies. Which survey method is likely to produce a representative survey?

• Ask the boys in the boys locker room.
• Ask the 25 students in his homeroom class.
• Ask students coming out of a movie theater.
• Ask half of the 34 students on the soccer team.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Elise, a supermarket employee, approached 50 random customers and asked whether they would be willing to discuss what they like most about the store. She interviewed the 22 who said yes. Is this sample of the supermarket's customers likely to be biased?

• yes

• no

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Which scenario would produce the least biased results?

• asking athletes at a gym what their favorite television show is
• asking shoppers at a store where their favorite place to shop is
• asking fans at a baseball game who their favorite baseball team is
• asking students in a college library what their favorite college sports team is

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Example 1: An online news site asks readers to take a brief survey about whether they subscribe to a daily newspaper.

• Self-Selected

• Convenience

• Simple Random (SRS)

• Stratified Random

• Cluster Random

Tags

CCSS.HSS.IC.B.3

Example 2: A survey of a city's residents is conducted by asking 20 people at a grocery store whether the city should impose a beverage tax.

• Self-Selected

• Convenience

• Simple Random (SRS)

• Stratified Random

• Systematic

Tags

CCSS.HSS.IC.B.3

Example 6: Ms. George wants to know the percentage of juniors that will take two math classes their senior year. She asks Mrs. Kelly to print out a list of all the juniors and picks every 10th student on the list.

• Systematic

• Convenience

• Simple Random (SRS)

• Stratified Random

• Cluster Random

Tags

CCSS.HSS.IC.B.3