Conjoint analysis based on a ortogonal design

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Nimmer
Posts: 2
Joined: Tue May 21, 2013 11:35 pm

Conjoint analysis based on a ortogonal design

Postby Nimmer » Tue May 21, 2013 11:50 pm

Hi,

I'm having some issues regarding a conjoint analysis. Excuse me if some of the terms I use are wrong, but it has been some time since I last worked with SPSS - and my teacher was Danish.

Task object:
I am to make a series of concept travelpackages (Attributes and attribute notes/levels).
This far I've got things under control - I've reduced the number of packages from 81 to 9, with the help of 'ortogonal' design.

These 9 packages have been rated by some people (1-10), on a questionnaire.

Then I've been asked to write a syntax which evaluates my conjoint plan.

---
CONJOINT PLAN= 'C:\Users\MYNAME\DROBBOXFOLDER\Conjoint_cards.SAV'
/DATA='C:\Users\MYNAME\DROBBOXFOLDER\Respondents.SAV'
/SCORE=Card_1 TO Card_9
/SUBJECT=ID
/FACTORS= SMS Minutter Data Tryghed
/PRINT=ALL
/PLOT=ALL.
---

However I keep getting this error
---
SUBJECT SUBCOMMAND -- Subject variable is not on data file.
Execution of this command stops.
---

At this point I've been to the dark pages of Google and back for an answer to what I am doing wrong, but nothing so far. The answer is probably staring me in the face. But I will appreciate any help or pointers as to what I'm doing wrong.
Nimmer
Posts: 2
Joined: Tue May 21, 2013 11:35 pm

Re: Conjoint analysis based on a ortogonal design

Postby Nimmer » Wed May 22, 2013 12:26 am

Problem solved: So apparently one shouldn't follow a guide to the letter. My datafile didn't contain a ID, so removing this from my syntax solved the problem.
statman
Administrator
Posts: 2699
Joined: Tue Jun 12, 2007 12:08 pm
Location: Florida, USA

Re: Conjoint analysis based on a ortogonal design

Postby statman » Wed May 22, 2013 12:27 am

Are you/is it talking about the SUBJECT=ID, i.e., ID, not being in the data? Not really sure I understand the error's reference

Also, see the Note below
See the note below

NOTE: Please read the Posting Guidelines and always tell us your OS, the SPSS version and information about your study and data!

Statman
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