iSixSigma

Test to validate difference in survey respondent answers

Six Sigma – iSixSigma Forums General Forums Tools & Templates Test to validate difference in survey respondent answers

This topic contains 4 replies, has 3 voices, and was last updated by  Berkowitz 9 years, 4 months ago.

Viewing 5 posts - 1 through 5 (of 5 total)
  • Author
    Posts
  • #53472

    sw
    Member

    I recently faciliated an internal survey where business partners could provide feedback on each other on such things as partnering. I’m segmenting the responses by the groups that responded (e.g. for the client managers what were the scores from the consultants vs. sales support). If I’m looking at averages, what is the appropriate test to use to see if there truly are differences in the scores between the respondent groups or if it is just normal variation in the scores? Thank you!

    0
    #190281

    UL
    Member

    For surveys I do not put any faith at all in a shift of the average. In fact I do not bother calculating the average.

    I use the Chi-Squared test for the analysis, selecting a confidence limit that is suitable for the survey.

    Beware that the Chi-Squared test needs around 5 to 10 responses per category of the response. Check your software for the minimum for your value (it varies).

    I personally do not know, yet, what to do with a survey I’m starting to look at. The responses could have been rating category 1 through 5, but as it happens out of the 50+ responses thus far nobody has responded with a value of 3. That causes a divide by zero error …. still looking at that. Just sharing so you can be aware of a problem in your analysis.

    0
    #190282

    UL
    Member
    #190305

    sw
    Member

    Thank you for your input, this is very helpful. Of course the audience for my survey wants to see averages but I’m also trying to provide them with better analytics to help them understand the results and how to interpret them. Thanks again.

    0
    #190310

    Berkowitz
    Participant

    Useful link UL, thanks

    0
Viewing 5 posts - 1 through 5 (of 5 total)

You must be logged in to reply to this topic.