In What Sense Does Eta-Squared Tell Us the "Effect Size

Multiple Choice

In what sense does eta-squared tell us the "effect size" of an association?

A) It describes whether the association is statistically significant.
B) It tells us the strength of the association.
C) It tells us how likely we are to observe the association by chance alone.
D) It tells us the appropriate alpha value that should be used to detect an association.