Which Will Help Avoid the External Validity of a Study

question 4

Multiple Choice

Which will help avoid the external validity of a study?

• A) Hawthorne effect
• B) Laboratory setting
• C) Representativeness of the sample
• D) Tight controls over all groups

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Definitions:

Degrees of Freedom

The number of independent values or quantities that can vary in an analysis without breaking any constraints.

Critical Value

A value that is compared with the test statistic to determine whether H0 should be rejected.

Independent Variables

Factors that are manipulated or changed in an experiment to assess their effects on dependent variables.

Determination

The process of deciding or concluding something based on data, evidence, or logical reasoning.