Question

Two samples, each with n = 9 scores, produce an independent-measures t statistic of t = 3.00. If the effect size is measured using rẽ, what is the value of r2? 4/20 9/25 O2/16 2/18

Answer 1

Solution:

We are given:

$\boldsymbol{t=3, df=n_{1}+n_{2}-2=9+9-2=16}$

We know that:

$\boldsymbol{r^{2}=\frac{t^2}{t^{2}+df}=\frac{3^{2}}{3^{2}+16}=\frac{9}{25}}$

Two samples, each with n 9 scores, produce an independent-measu res t statistic of t effect size is measured using r2, what is the value of r2? 3.00. If the 4/20 9/25 2/16 2/18