When an Experiment Has Poor Internal Validity,which of the Following

question 46

Multiple Choice

When an experiment has poor internal validity,which of the following might be of concern?

• A) The results of the experiment may not relate to real-world situations.
• B) It might be difficult to determine if the independent variable was what produced the result.
• C) The observed results may not be statistically significant.
• D) The measurement does not predict outcomes that it is supposed to predict.

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Definitions:

Random Variation

The unpredictability in the behavior or outcome of a process, due to the influence of random factors or noise.

Cyclical Variation

Fluctuations in statistical or economic data that occur periodically over cycles, such as those caused by the business cycle.

Economic Recession

A period of temporary economic decline during which trade and industrial activities are reduced, generally identified by a fall in GDP in two successive quarters.

Inflation

The rate at which the general level of prices for goods and services is rising, and subsequently, purchasing power is falling.