Bias

Bias

1. Bad Sampling Frame

   • The list that is used to pick a random sample is bad

2. Nonresponse Bias

   • Someone just straight up doesn't answer a survey

3. Undercoverage

   • The sample is not representative of the population via undersampling or a group just not being sampled at all

4. Convenience Sampling

   • Only samples people who are convenient to sample

5. Voluntary Response Bias

   • People choose to participate

6. Response Bias

   • Something about the survey/question (or even the person asking the question) influences the way people respond