Examlex
Which one of the following statements is true?
Independent Variables
Variables in an experiment or model that are manipulated or changed to assess their effect on dependent variables.
Degrees Of Freedom
A parameter of the t distribution. When the t distribution is used in the computation of an interval estimate of a population mean, the appropriate t distribution has n − 1 degrees of freedom, where n is the size of the sample.
Observations
Individual data points or recorded measures from a study or experiment.
Independent Variables
Factors in a model or experiment that are deliberately altered to study their impacts on outcome variables.
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