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Glossary

Practical Significance
Refers to the practical importance of an effect size. For example, an outcome evaluation may show that the treatment group performed statistically significantly better than the control group following participation in a program, but if the effect size is very small and the program costs are very high, the results may not be practically significant. Practical significance can be subjective, and can be assessed by looking at the magnitude of the effect size, the costs and resources of the program, and various other factors.