What potential problems should you look for in the univariate distributions of categorical and quantitative scores? could you check over this problem and tell me what I did wrong. Calculate an effect...

What potential problems should you look for in the univariate distributions of categorical and quantitative scores?

could you check over this problem and tell me what I did wrong.

Calculate an effect size (n2) for each of the three t ratios and interpret these.

N^2 = t^2/ (t^2 +df) =
20/ (1.9 +20) = 0.91

N^2 = t^2/ (t^2 +df) = 20/ (1.6 +20) = 0.92

N^2 = t^2/ (t^2 +df) = 20/ (0.5 +20) + 20.5