|Date: ||Tue, 16 Aug 2005 08:59:16 +0200|
|Reply-To: ||Marta García-Granero
|Sender: ||"SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>|
|From: ||Marta García-Granero
|Organization: ||Asesoría Bioestadística|
|Subject: ||Re: effect size form F and df|
|Content-Type: ||text/plain; charset=ISO-8859-1|
See the formula at:
I think it's the same you are using.
MP> I want to calculate cohen's d from and F and df. Does anyone know how
MP> to do this, or if it is possible?
MP> I was thinking that I could just use this equation, since F is just t
MP> squared. I could take the square root of the F and then run this
MP> syntax. Does that make sense?
MP> COMPUTE est_dbyt = (2 * t_value) / sqrt(df) .
MP> EXECUTE .