What Is Ex Post Facto Research? Give an Example of an Experiment

question 160

Short Answer

What is ex post facto research? Give an example of an experiment that utilizes one manipulated and one measured IV.

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Definitions:

Paired-Difference Experiment

Another description for a study design where two observations (treatments or conditions) applied to the same subjects are compared to evaluate their difference.

Null Hypothesis

A default hypothesis that there is no effect or difference, used as a starting point for statistical significance testing.

Confidence Interval

A range of values, derived from the sample data, that is likely to contain the true population parameter with a certain level of confidence.

Degrees Of Freedom

The number of independent values or quantities which can be assigned to a statistical distribution or a data set, after a certain number of restrictions have been applied to all data points.