Discussion Post: Measurement, Statistic & Appraisal
• Compare independent variables, dependent variables, and extraneous variables. Describe two ways that researchers attempt to control extraneous variables. Support your answer with peer-reviewed articles.
• Describe the "levels of evidence" and provide an example of the type of practice change that could result from each.
The response must include a reference list. Using Times New Roman 12 pnt font, double-space, one-inch margins, and APA style of writing and citations.