Biased Sample

Ray wants to determine the most popular brand of soda in all of Missouri. He polls all the houses on his street to get a sample. Random or Biased?

• Random

• Biased

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

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

• A

• B

When a sample does not accurately represent the population it is a:

• Unbiased sample

• Biased sample

When a sample does not accurately represent the population it is a:​ ​ (a)  

• Biased Sample

• Unbiased sample

The sample should REPRESENT the population so you can INFER what the larger group is like.

If you take a BAD sample, it does not allow you to make inferences about the larger population.

Choose the option below that says "Biased Sample"

• A sample that accurately represents the population

• A sample that is selected randomly from the population

• Biased Sample

Shelley wants to survey grocery shoppers about their favorite brands. She goes to the store at 8am and surveys the first 50 people. Is this a biased sample or unbiased sample?

• Biased Sample

• Unbiased Sample

A school district wants to know if parents would prefer to get phone calls or emails from the schools. They survey the parents of all the seventh grade students enrolled in the district. Is this a biased sample or unbiased sample?

• Biased Sample

• Unbiased Sample