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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
In-Reply-To:   <>
Content-Type:   text/plain; charset=ISO-8859-1

Hi Matthew,

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> **


MP> COMPUTE est_dbyt = (2 * t_value) / sqrt(df) .


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