While statistical power analyses provide more reliable minimum sample size estimates, researchers should primarily draw on the inverse square root method, which stands out in terms of precision and ease of use.Ībsolute contribution: the information an indicator variable provides about the formatively measured item, ignoring all other indicators. The 10 times rule is not a reliable indication of sample size requirements in PLS-SEM and should at best be seen as a rough estimate. Adopted from the book on PLS-SEM by Hair, Hult, Ringle, and Sarstedt.ġ0 times rule: one way to determine the minimum sample size specific to the PLS path model that one needs for model estimation (i.e., 10 times the number of independent variables of the most complex ordinary least squares regression in the structural model or any formative measurement model).
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