Which post hoc multiple comparison technique requires the largest effect size to indicate significance?
A) Dunnett
B) Student-Newman-Keuls
C) Scheffé
D) Tukey

Question

Quizplus · Accepted Answer

Scheffé's method is known for being more conservative compared to other post hoc tests, requiring a larger effect size to indicate significance. This is because it allows for the comparison of any set of means, not just those that were predefined, making it more flexible but also more stringent in terms of the evidence needed to declare differences as statistically significant.

Which Post Hoc Multiple Comparison Technique Requires the Largest Effect