Suppose that you as a researcher wanted to examine the impact ofpolice officer rank on perceptions of friendliness by citizens inCollege Park, MD. Rank is measured as patrol officer, sergeant orcaptain, and citizen perception is captured by a scale ranging from-50 to 50 and measured in a survey given to 1,000 randomly selectedpeople after an interaction with a police officer. 500 peopletalked to a patrol officer, 300 talked to a sergeant and 200 peopletalked to a captain.
3. What is the a) unit of observation and b) reasonablepopulation for this sample?
4. Identify the a) independent and b) dependent variables.
5. For each variable, name what kind of variable it is (nominal,ordinal, interval, or ratio).
