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Date:         Fri, 11 Nov 2005 14:16:22 -0600
Reply-To:     "Swank, Paul R" <>
Sender:       "SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>
From:         "Swank, Paul R" <>
Subject:      Re: t-test with mean, sd, and n
Comments: To: Matthew Pirritano <>
Content-Type: text/plain; charset="us-ascii"

Yes, it is a paired sample test and so you can not determine the t test without knowing the correlation between the two assessments, unless, of course, you have the standard deviation of the difference.

Paul R. Swank, Ph.D. Professor, Developmental Pediatrics Director of Research, Center for Improving the Readiness of Children for Learning and Education (C.I.R.C.L.E.) Medical School UT Health Science Center at Houston

-----Original Message----- From: SPSSX(r) Discussion [mailto:SPSSX-L@LISTSERV.UGA.EDU] On Behalf Of Matthew Pirritano Sent: Friday, November 11, 2005 2:03 PM To: SPSSX-L@LISTSERV.UGA.EDU Subject: t-test with mean, sd, and n

I'd like to reanalyze some data form an article. They're looking to see if variations in differences in math performance between 2 groups is a function of math problem type (if the language in the problem is simple or complex as determined by linguistics experts). All I have is means, SD, and N.

Is there a way to do this? Is it some sort of paired samples t-test?

thanks Matt

Matthew Pirritano, Ph.D. National Science Foundation Post-Doctoral Fellow College of Education Department of Individual, Family & Community Education MSC05 3040 1 University of New Mexico Albuquerque, NM 87131-0001 Telephone (505)277-7115 FAX (505)277-8361

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