problems with conjoint analysis syntax

Moderators: statman, Analyst Techy, andris, Fierce, GerineL, Smash

sophie342
Posts: 6
Joined: Tue Jul 03, 2012 9:11 am

problems with conjoint analysis syntax

Postby sophie342 » Thu Sep 13, 2012 10:26 am

Hi,
I have followed the IBM conjoint tutorial and am at the stage of analysing my results but there is an error in my syntax and i cant work out why. the syntax i have is:

CONJOINT PLAN='H:\Program Files\IBM\SPSS\Statistics\20\Samples\English\carpet_plan.sav'
/DATA='H:\Program Files\IBM\SPSS\Statistics\20\Samples\English\carpet_plan.sav'
/SEQUENCE=PREF1 PREF2 PREF3 PREF4 PREF5 PREF6 PREF7 PREF8 PREF9 PREF10 PREF11 PREF12 PREF13 PREF14 PREF15 PREF16 PREF17 PREF18 PREF19 PREF20 PREF21 PREF22
/SUBJECT=ID
/FACTORS=PACKAGE BRAND (DISCRETE)
PRICE (LINEAR LESS)
SEAL (LINEAR MORE) MONEY (LINEAR MORE)
/PRINT=SUMMARYONLY.

this is from the IBM samples data sets, the message i get is:

Warnings
Text: PREF1 Command: CONJOINT
An undefined variable name, or a scratch or system variable was specified in a variable list which accepts only standard variables. Check spelling and verify the existence of this variable.
Execution of this command stops.
Unrecognized text appears where end of subcommand (slash) was expected.
SUBJECT SUBCOMMAND -- Subject variable is not on data file.

the PREF1 to PREF22 are the headings for each of the preference columns in my data set which is what it says to put.
any help on where i am going wrong would really be appreciated

Thanks
statman
Administrator
Posts: 2737
Joined: Tue Jun 12, 2007 12:08 pm
Location: Florida, USA

Re: problems with conjoint analysis syntax

Postby statman » Thu Sep 13, 2012 2:07 pm

A slight leap: Since the error starts with "CONJOINT" lets first make sure you have the categories module - Do you?
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
Statistical Services
sophie342
Posts: 6
Joined: Tue Jul 03, 2012 9:11 am

Re: problems with conjoint analysis syntax

Postby sophie342 » Thu Sep 13, 2012 2:37 pm

Yes I think so, i have recently upgraded to SPSS 20 and did input the authorisation code for conjoint and categories
the data I am using is from the IBM tutorial examples, i was trying to follow the example through in preparation for some data I will be analysing in the future.

Who is online

Users browsing this forum: No registered users and 2 guests

cron