help
help > z score transform back to r value
Jun 24, 2015 01:06 PM | Yang Yang
z score transform back to r value
Hi, Alfonso,
I hope to report r value in my paper. But when I use this r=tanh(Z), why the r values are almost the same as z values. If I transform the z score into r value, the result is 0.08 based on the transformation of r=tanh(z). Additionally, why a very low average z value (0.08) of a group of 15 participants could be significant (p<0.02) when I do one sample t test in post-hoc analysis. But, the relation coefficient seems to be so low. Is it a correct way to transfrom?
Thanks!
Ivan
I hope to report r value in my paper. But when I use this r=tanh(Z), why the r values are almost the same as z values. If I transform the z score into r value, the result is 0.08 based on the transformation of r=tanh(z). Additionally, why a very low average z value (0.08) of a group of 15 participants could be significant (p<0.02) when I do one sample t test in post-hoc analysis. But, the relation coefficient seems to be so low. Is it a correct way to transfrom?
Thanks!
Ivan
Threaded View
| Title | Author | Date |
|---|---|---|
| Yang Yang | Jun 24, 2015 | |
| Alfonso Nieto-Castanon | Jun 30, 2015 | |