Examlex
The income approach to measuring GDP involves adding the incomes earned by owners of all factors of production.
Experimenter Bias
A form of bias introduced by the experimenter whose expectations about the outcome of the experiment can be subtly communicated to the participants.
Researchers Blind
A method used in studies where researchers are kept unaware of key aspects of the research, such as which participants belong to the control or experimental group, to prevent bias.
External Validity
The extent to which the results of a study can be generalized to other situations and to other people.
Random Error
Variability in data that arises from unpredictable fluctuations and inconsistencies in the measurement process.
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