Representative and Biased Samples

Burger King wants to know what their customers think of the service. A link to a survey is printed on each receipt, and cashiers ask customers to complete the survey. Is this representative or biased?

• Representative Sample

• Biased Sample

To find out the favorite candy of JDMS students, Coach Williams asks the wrestling team which is their favorite candy. Is this representative or biased?

• Biased Sample

• Representative Sample

All students' names have been placed in a bowl. To determine what the favorite subject is of JDMS students, Mrs. Brantley draws out 100 names and asks those students what their favorite subject is. Is this representative or biased?

• Representative Sample

• Biased Sample

Middle school students are chosen at random to determine the average shoe size of middle school students.

• Representative Sample

• Biased Sample

Mrs. Leggett asks every 5th parent who walks in the office which is the best method of reaching them (phone, email, postal mail, etc.). Is this representative or biased?

• Biased Sample

• Representative Sample

Mediacom wants to know the most used Internet service in Hazlehurst. A representative calls every 100th person in the phonebook and asks what company they receive Internet from. Is this representative or biased?

• Representative Sample

• Biased Sample

The mayor mails a survey to people in the phonebook to determine where families mostly shop for groceries. Is this representative or biased?

• Representative Sample

• Biased Sample

Mrs. Taylor wants to know the favorite sport of all 7th grade students. Which would be the best method for obtaining the most representative sample?

• Every other girl in her 3rd period

• Every other person in her 3rd period

• Every 3rd person that walks in her classroom each class period

Jeremy is trying to the determine the most popular color shirt worn on a particular day. He sits outside Walmart's doors and notes the color of the person's shirt who walks in the store every 5 minutes. Is this representative or biased?

• Biased Sample

• Representative Sample

The gatekeeper at the football game asks the first 50 people who come through the gate what their favorite sport is.

• Representative Sample

• Biased Sample