Chapter 9 - Bias in Statitics

The process of gathering information/data from EACH member of the population.

• Census
• Interview
• Survey
• Questionnaire

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

A numerical characteristic of the POPULATION

• Statistic
• Parameter
• Observation
• Study

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.4

A quantity calculated from the observations in a SAMPLE.

• Parameter
• Study
• Statistic
• Observation

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

CCSS.HSS.IC.B.4

Source of bias in which people CHOOSE to respond and usually only people with very strong opinions respond

• Response Bias
• Undercoverage
• Convenience Sampling
• Voluntary Response

Tags

CCSS.RL.11-12.6

Source of bias in which some groups of populations are LEFT OUT of the selection process

• Response Bias

• Selection Bias

• Convenience Sampling

• Voluntary Response

Source of bias that occurs when an individual chosen for the sample CAN'T be contacted or refuses to cooperate.

• Response Bias
• Undercoverage
• Nonresponse
• Voluntary Response

Tags

CCSS.RL.11-12.6

Source of bias that occurs when you ask people who are EASY to ask

• Response Bias
• Convenience Sampling
• Nonresponse
• Voluntary Response

Tags

CCSS.RL.11-12.6

Why do we randomly select our samples?

• for control
• reduce bias
• so we don't get the same answers from everyone
• to eliminate confounding results

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

“Some cell phone users have developed brain cancer. Should all cell phones come with a warning label explaining the danger of using cell phones?”

What kind of bias is evident in this survey question?

• Undercoverage Bias

• Non-Response Bias

• Response Bias

• Voluntary Response Bias

Tags

CCSS.HSS.IC.B.3

Many websites like Amazon and Yelp include customer ratings and reviews of products, restaurants, hotels, and so on. What is the predominant bias evident in these ratings and reviews?

• Response Bias

• Non-Response Bias

• Undercoverage Bias

• Voluntary Response Bias

Tags

CCSS.HSS.IC.B.6