Those Things That Confuse Test and Survey Results and Research

question 31

Multiple Choice

Those things that confuse test and survey results and research findings serve as a:

• A) Threat to external validity
• B) Threat to internal validity
• C) Threat to external reliability
• D) Threat to internal reliability

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Definitions:

Error Term

The error term represents the difference between observed values and the values predicted by a model in statistical analysis.

Independent Variables

Variables in an experiment or model that are manipulated or categorized to observe their effect on dependent variables.

Goodness of Fit

A statistical test used to determine how well observed data match the expected data from a model.

Estimated Regression Equation

The estimate of the regression equation developed from sample data by using the least squares method. For simple linear regression, the estimated regression equation is yˆ = b0 + b1x.