Sampling Bias

A set of observations that constitute PART of the population.

• Statistic
• Census
• Population
• Sample

Tags

CCSS.HSS.IC.B.3

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

• Census
• Interview
• Survey
• Questionnaire

Tags

CCSS.6.SP.B.5A

A numerical characteristic of the POPULATION

• Statistic
• Parameter
• Observation
• Study

Tags

CCSS.HSS.IC.B.3

A quantity calculated from the observations in a SAMPLE.

• Parameter
• Study
• Statistic
• Observation

Tags

CCSS.HSS.IC.B.4

Sampling method that consists of n individuals from the population chosen in such a way that every individual has an EQUAL chance of being selected.

• Stratified Sampling
• Simple Random Sampling (SRS)
• Cluster Sampling
• Systematic Sampling

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

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.HSS.IC.B.3

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

• Response Bias
• Undercoverage
• Convenience Sampling
• Voluntary Response

Tags

CCSS.HSS.IC.B.3

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.HSS.IC.B.3

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

• Response Bias
• Convenience Sampling
• Nonresponse
• Voluntary Response

Tags

CCSS.HSS.IC.B.3

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.B.3