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How many questions needed in MaxDiff analysis?

By maryann | Feb 22, 2018 09:03PM CET

Hi,

I am running a survey with 500 respondents. We are using MaxDiff analysis to examine 9 attributes in sets of 3. I am finding conflicting guidance about how many questions to ask to get valid data (and ranking from best>worst of the 9 attributes).

Using this calculator: http://www.sawtoothsoftware.com/support/knowledge-base/general-issues/1665-maxdiff-calculator I come up with 9 questions.

(3*9)/3=9

Will 9 questions get me what I need?

Thank you!!!

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By Efthalia | Feb 23, 2018 02:09PM CET | XLSTAT Agent

Hello Maryann,

Yes, 9 from 15 questions should be fine for your survey. It depends on the time you want respondents to spend to complete the survey.

Regards,

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