+ Reply to Thread
Results 1 to 2 of 2

Thread: One way ANOVA vs Kruskal Wallis

  1. #1
    Points: 6, Level: 1
    Level completed: 11%, Points required for next Level: 44

    Posts
    1
    Thanks
    0
    Thanked 0 Times in 0 Posts

    One way ANOVA vs Kruskal Wallis




    Hi,

    I am comparing four groups (measurements of bone thickness and other bone parameters). The distributions are normal (Kolmogorov–Smirnov test) and variances equal between groups (Levenes test). I have 7 samples in each group.
    As I see from the literature this would call for a parametric test. But the results from Kruskal Wallis make more sense than those from ANOVA - I get significant differences on more comparisons whit KW than with ANOVA and biologicly and from what we have observed during analysis those results from KW would make more sense.
    So my question is if it is ok to use a nonparametric test in this case or is that wrong?

    Best,
    Nina
    Last edited by n.lu; 08-23-2017 at 05:13 AM.

  2. #2
    TS Contributor
    Points: 17,949, Level: 85
    Level completed: 20%, Points required for next Level: 401
    Karabiner's Avatar
    Location
    FC Schalke 04, Germany
    Posts
    2,561
    Thanks
    56
    Thanked 643 Times in 605 Posts

    Re: One way ANOVA vs Kruskal Wallis


    I get significant differences on more comparisons whit KW than with ANOVA
    Do you mean, from the respective global tests, or from the pairwise comparisons? If the latter is the case, how were these pairwise comparisons performed?
    So my question is if it is ok to use a nonparametric test in this case or is that wrong?
    Why did you perform K-W although you knew from literature that ANOVA was o.k. here?

    With kind regards

    Karabiner
    »Jetzt kann mich der Führer mal am Arsch lecken.« (Ernst Kuzorra, 1941)

+ Reply to Thread

           




Tags for this Thread

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