Date: Wed, 28 May 2008 09:23:28 -0400
Reply-To: Jodene Fine <finej@msu.edu>
Sender: "SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>
From: Jodene Fine <finej@msu.edu>
Subject: Re: syntax to create T-scores from z-scores?
In-Reply-To: A<483D2371.3050604@gmail.com>
Content-Type: text/plain; charset="iso-8859-1"
Marta is correct. The conversion from a t-score to a z-score is t=z*10 + 50.
Conversions involving z-scores are special because the mean of a z-score is
0 and the SD is 1. The general formula for score conversion is:
Snew = ((Xold - Mold)/SDold)*SDnew+Mnew
Where:
Snew= new score
Xold = old score
Mold = old mean
SDold = old standard deviation
SDnew = new standard deviation
Mnew = new mean
Good luck,
Jodene
-----Original Message-----
From: SPSSX(r) Discussion [mailto:SPSSX-L@LISTSERV.UGA.EDU] On Behalf Of
Marta García-Granero
Sent: Wednesday, May 28, 2008 5:19 AM
To: SPSSX-L@LISTSERV.UGA.EDU
Subject: Re: syntax to create T-scores from z-scores?
Hi Art
I might be wrong, but I think that the conversion from Z scores to T
scores is:
Tscore=Zscore*10+50
Best regards,
Marta
> open a clean instance of SPSS.
> cut, paste, and run the following syntax.
>
> data list list/id (f3), zscore(f4.2).
> begin data.
> 001 -3.00
> 002 -2.58
> 003 -1.96
> 004 -1.68
> 005 0.00
> 006 3.00
> 007 2.58
> 008 1.96
> 009 1.68
> 010 -2.00
> 011 -1.00
> 012 1.00
> 013 2.00
> end data.
> sort cases by zscore.
> numeric Tscore (f2).
> compute Tscore = zscore +50 + (10*zscore).
> list.
>
> Art Kendall
> Social Research Consultants
> Celebrating the 60th Anniversary of the UN's Universal Declaration of
> Human Rights
>
>
> edunbar@ucla.edu wrote:
>> Dear List members,
>>
>> Okay I hate to ask, but having spent too much time trying to figue
>> this out on my laptop, what is the syntax to create T-scores from
>> z-scores?
>>
>> Much thanks,
>>
>> ed dunbar
>>
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=====================
To manage your subscription to SPSSX-L, send a message to
LISTSERV@LISTSERV.UGA.EDU (not to SPSSX-L), with no body text except the
command. To leave the list, send the command
SIGNOFF SPSSX-L
For a list of commands to manage subscriptions, send the command
INFO REFCARD
=====================
To manage your subscription to SPSSX-L, send a message to
LISTSERV@LISTSERV.UGA.EDU (not to SPSSX-L), with no body text except the
command. To leave the list, send the command
SIGNOFF SPSSX-L
For a list of commands to manage subscriptions, send the command
INFO REFCARD
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