Statistically controlling for extraneous variables

Statistically controlling for extraneous variables is an option for removing the influence of a 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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