+ Reply to Thread
Results 1 to 3 of 3

Thread: Non-parametric Post-Hoc Tests

  1. #1
    Points: 1,654, Level: 23
    Level completed: 54%, Points required for next Level: 46

    Posts
    13
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Non-parametric Post-Hoc Tests




    Hi,

    I have been using the Shapiro-Wilk test along with boxplots, histograms etc to test for normality, some of my data appears to be significantly difference from a normal distribution.

    Would the Kruskall Wallis test be sufficient to use in place of an ANOVA test followed by a post - hoc test.

    Also is there an equivalent of the Nemenyi test in SPSS or some other equivalent to Tukey for non parametric data. (the data i need to analyse is across five variables with five levels)

    Cheers,
    jay-oc

  2. #2
    Beep
    Points: 63,245, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Awards:
    Discussion EnderPosting AwardCommunity AwardMaster TaggerFrequent Poster
    Dason's Avatar
    Location
    Ames, IA
    Posts
    11,314
    Thanks
    266
    Thanked 2,202 Times in 1,881 Posts
    When you say your data is non-normal we typically don't care too much. If you're doing an ANOVA it's the residuals we want to be normally distributed. Did you test the original data or the residuals?

  3. #3
    Points: 1,654, Level: 23
    Level completed: 54%, Points required for next Level: 46

    Posts
    13
    Thanks
    0
    Thanked 0 Times in 0 Posts

    I was testing the result from my experiments so the original data. Im not sure what you mean by residuals?

+ Reply to Thread

           




Similar Threads

  1. non-parametric post-hoc tests
    By JennJoy in forum Statistics
    Replies: 7
    Last Post: 02-24-2011, 06:46 PM
  2. Replies: 0
    Last Post: 10-22-2010, 09:13 AM
  3. Non-Parametric Dunnett's Post HOC test?
    By KappaBeast in forum Statistics
    Replies: 2
    Last Post: 05-01-2009, 07:01 PM
  4. Replies: 2
    Last Post: 11-09-2008, 04:40 PM
  5. Nonparametric tests to support parametric tests
    By Joseph in forum Statistics
    Replies: 3
    Last Post: 06-21-2006, 11:00 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts






Advertise on Talk Stats