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Date:         Thu, 8 Sep 2005 15:40:36 -0300
Reply-To:     Hector Maletta <>
Sender:       "SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>
From:         Hector Maletta <>
Subject:      Re: Data Layout
Comments: To: Vassilis Hartzoulakis <>
In-Reply-To:  <!~!>
Content-Type: text/plain; charset="us-ascii"

Since apparently the number of items mrked by each subject is variable, you better choose the Multiple Dichotomies coding system, i.e. open one column or variable for each item (a total of 15 variables), and put 0 or 1 in each depending on the subject having omitted or marked it respectively. You can of course use other codes intead of 0 and 1, but those are quite convenient for many purposes. Items not chosen may remain blank or be marked with 0, and I personally like to code them to zero, also for a number of reasons.


> -----Original Message----- > From: SPSSX(r) Discussion [mailto:SPSSX-L@LISTSERV.UGA.EDU] > On Behalf Of Vassilis Hartzoulakis > Sent: Thursday, September 08, 2005 3:14 PM > To: SPSSX-L@LISTSERV.UGA.EDU > Subject: Data Layout > > Greetings > I have a number of subjects who have expressed their > preferences among a number of 15 items. > e.g. Some have chosen items 1, 4, 5 and 9... others have > chosen items 1, 6, 9, 11, 13 and 15 etc.... > What might be a good layout for SPSS to help me find the most (and the > least) popular items? > Thank you > Vassilis > > __________ Informacisn de NOD32 1.1212 (20050908) __________ > > Este mensaje ha sido analizado con NOD32 Antivirus System > > >

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