Examlex
A group of employees of Unique Services will be surveyed about a new pension plan. In-depth interviews with each employee selected in the sample will be conducted. The employees are classified as follows.
-What is the probability that the first person selected is either in management or in supervision?
Prospective Study
A research design that follows participants forward in time to examine the relationship between specific exposures and outcomes.
Clinical Trial
A research design that tests the effects of medical treatment. Many clinical trials are randomized controlled trials that allow researchers to determine whether a new treatment is or is not effective.
Ex Post Facto Study
A research design that examines the effects of an independent variable on a dependent variable, where the study is conducted after the events have occurred.
Independent Variable
In research, a variable that is manipulated or changed to observe its effect on a dependent variable.
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