Primary Data Are Data That Have Already Been Collected for Purposes

question 36

True/False

Primary data are data that have already been collected for purposes other than the problem at hand.

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Definitions:

True Experiments

Experimental designs in which the researcher manipulates the independent variable to observe its effect on a dependent variable, with random assignment to control and experimental groups.

Nutritional Benefits

Refers to the advantageous aspects of food substances that contribute to overall health and well-being, including support for body functions, energy, and disease prevention.

History Effect

As a threat to the internal validity of an experiment, refers to any outside event that is not part of the manipulation that could be responsible for the results.

Instrument Decay

As a threat to internal validity, the possibility that a change in the characteristics of the measurement instrument, including human observers, is responsible for the results.