If I calculated the phi coefficient to be .15, what would this mean?
A) That there is a small effect size
B) That there is a medium effect size
C) That there is a large effect size
D) That there is no effect size at all

Question

If I calculated the phi coefficient to be .15, what would this mean?
A)	That there is a small effect size
B)	That there is a medium effect size
C)	That there is a large effect size
D)	That there is no effect size at all

Quizplus · Accepted Answer

A phi coefficient of .15 indicates a small effect size, as it is generally considered that values around .1 represent a small effect, around .3 a medium effect, and around .5 or higher a large effect.

If I Calculated the Phi Coefficient to Be