In the study I am conducting, (Group A) the correlation coefficient between black & white imagery and retention is given by R1 and is significant. And (Group B) the correlation coefficient between colorful imagery and retention is given by R2 and is significant.
When I compare R1 and R2 (correlation coefficient), I get R2>R1. Using the Fisher Z-Transform, I found that Zobs did not fall within the range -1.96 < Zobs < 1.96, and therefore they are statistically significant.
Can we deduce retention was NOT equivalent for both groups A and B. I am not sure how to best interpret this analysis. Kindly advise.