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6 Written questions

5 Multiple choice questions

  1. A random selection of a representative sample and that collects data.
  2. A treatment designed to have no effect but to resemble the actual treatment being used.
  3. Some individuals are favored more than others in observation studies.
  4. Participants.
  5. Respondents can decide whether or not to respond.

5 True/False questions

  1. Control GroupA group of experimental units given no treatment or a default treatment to be compared with the actual treatment groups for observation.

          

  2. Double Blind ExperimentsThe designer doesn't know who has which treatment.

          

  3. SampleA random selection of a representative sample and that collects data.

          

  4. PopulationSubjects that are assigned to treatments randomly.

          

  5. Nonresponse BiasThose that feel more strongly on a topic and are willing to respond.