n Management Dynamics : Journal of the Southern African Institute for Management Scientists - Practical significance (effect sizes) versus or in combination with statistical significance (p-values) : research note

Volume 12, Issue 4
  • ISSN : 1019-567X



Statistical significance tests have a tendency to yield small p-values (indicating significance) as the size of the data sets increase. The effect size is independent of sample size and is a measure of practical significance. It can be understood as a large enough effect to be important in practice and is described for differences in means as well as for the relationship in two-way frequency tables and also for a multiple regression fit.

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