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Ben's research project involved assessing key retail trends. He decided that the best thing would be to interview directors from the country's top retailers and ignore the small independent stores who would have less knowledge. What kind of sample is this?
Third-variable Problem
A situation in correlation studies where a variable that has not been measured accounts for the relationship between two other variables, potentially misleading the results.
Independent Variables
Factors or conditions in an experiment that are manipulated or changed by the researcher to observe their effects on the dependent variables.
Dependent Variables
Variables in experimental research that are expected to change as a result of the manipulation of the independent variable.
Third-variable Problem
A challenge in research where a variable not accounted for influences the relationship between the studied variables, potentially leading to mistaken conclusions.
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