Statistically controlling for extraneous variables is an option for removing the influence of the variable on the study of program results.
Evaluators need to collect data on the extraneous variables, as well as the independent and dependent variables for analysis. Evaluators can use a range of statistical techniques for control including:
- General Linear Model
- Analysis of covariance
Johnson, B., & Christensen, L. (2012). Educational research quantitative, qualitative, and mixed approaches. (4th ed.). Thousand Oaks, CA: SAGE.
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