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Conjoint Analysis Examples
6/23/2005 at 3:39 PM ET
I am seeking a clear step by step example of a conjoint analysis from question development thorugh mathmatical analysis. Specifically, I would like to know if anyone has an Excel add-in or can send me an example to tear through and understand. I have several books on this topic but none are very clear as to the analysis part.
6/23/2005 at 3:48 PM
Do a search on "sawtooth software". I think they have a number of white papers on subject
6/23/2005 at 10:12 PM
Thanks, I checked them but there is not much detail there. I am looking for a compete analysis I can pull apart and learn from.
6/24/2005 at 4:07 AM
I would have recommended the Sawtooth website and their white papers as well.
You might need to try to track down a company that has used conjoint.
Alternatively, see if a market research company can assist.
Last time I used conjoint, I had 112 possible product/features combinations, their utility and likely take-up.
At that point, it became a diplomatic game amongst the project stakeholders and a game of what was/was not possible from an implementation/development/sales perspective, as well as corporate and product objectives.
6/24/2005 at 10:59 AM
The last time I commented on conjoint analysis I was told off for defining it as a process involving:
Guesswork (to identify what you should analyse), Survey, Analysis and more guesswork, Stats and weighting results (More guesswork), Inventing what you want to find and then reporting it!
Of course, rigorously applied with meticulous attention the statistical relevance of each stage and a lot of care in structuring your surveying technique will minimise these problems, but few conjoint analyses actually achieve this rigour, so the result is, sadly, often normative nonsense which could have been gleaned via a focus group.
There is a very good definition on:
This is disappointing because whilst it refers to the methodology, it does not reference the other sources the author uses.
A better reference is:
This offers some extremely useful sources including a couple of PDF downloads and some excellent case studies. Where in my mind some of these fail is that they do not indicate the level of application of statistical technique that is required at each stage of the process. Whilst the first download is very interesting, it leaves the reader wondering how the criteria on the matrix were decided on in the first place and give little in the way of guidance as to whether it was done by some prior analysis or by a bunch of new age romantics dancing round a stone circle armed with pendants and crystals!
The second download is from a Sawtooth Guru and whilst well argued, read a bit like Albert Einstein giving the results of a paper and saying, “take it or leave it!”
A last resource for now is:
You will find some interesting examples, methodology and some DIY examples. Questionpro’s raison d’etre is selling online surveys, so you would expect them to be keen to tutor their users into getting some worth from them.
Finally, (rather than lastly!) this site has quite a few references to conjoint techniques and they would be worth referencing.
6/24/2005 at 11:38 AM
You may of already seen these examples but they may help"
The 3rd link is an example used for credit cards and the last link is a case study for conjoint analysis for consumer preference for broadband services in Japan which is an interesting read.
Hope these help.
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