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Concept Map (observational studies and experiments (examples for above…

- - - - randomization- is the data being randomly selected
      - control- is the baseline for the testing
      - replication- is being able to reproduce test results
  - - - A well-designed experiment includes design features that allows researchers the eliminate extraneous variables
- - - - Who is better boys or girls?
  - - - Groups are made out of one larger group, and the smaller groups are knows as cluster groups
    - - Picking random people out of a large crowd
    - - subgroups are made from a larger group but the subgroups all have something in common.
  - - - The tendency of a person to answer questions on a survey untruthfully or misleadingly
        
        Saying that drugs are bad but also that they can cure cancer.
    - - Failure to obtain a measurement on one or more study variables
        
        usually a problem with mail surveys
    - - This is a set of questions that will disproportionately be one answer because of a unfair line of questions or survey.
        
        Answering which ethnicity group is the best.
  - - - people who actively choose to respond to the survey
        
        Talking about a topic such as political opinions.
    - - missing a significant portion of a population
    - - sampling made from people who are easy to sample
        
        If you were taking a sample of people at a sports even and you pick the section closest to you.