You are doing a study comparing two groups on a continuous DV. You get a significant t value for the difference between their means. What statistic should you use to estimate the size of the effect?
(A) Pearson's r
(B) Pearson's r squared
(C) Cohen's d.
(D) Phi
(E) None of the above.
(A) Pearson's r
(B) Pearson's r squared
(C) Cohen's d.
(D) Phi
(E) None of the above.