1. Bias in Surveys SWBAT identify bias in a sample, question, or display

2. Definitions Biased sample When certain groups are not represented in a sample When certain groups are not represented in a sample Biased question Suggests or leads to a specific response, or excludes a certain group Suggests or leads to a specific response, or excludes a certain group Biased displays Graphs can influence how results are interpreted Graphs can influence how results are interpreted

3. Is it biases? What is your favorite food? Outside an Italian restaurant Outside an Italian restaurant What is your favorite holiday? At the mall At the mall What is your favorite sport? Outside a football game Outside a football game What is your favorite music? In a park In a park

4. Biased Questions What is your favorite kind of cereal? Is gym your favorite subject? What is your favorite subject in school? What is your favorite subject in school? Do you think corn flakes are the best cereal? Is pizza the best choice for lunch? What is the best choice for lunch? What is the best choice for lunch?

5. Biased Displays