unequal variance

  1. 3

    Guidelines on Unequal Sample Sizes in Multilevel Models

    One of the advantages of using multilevel models is their tolerance to heterogeneity of variances between groups (or points in time for multilevel models of change). And one of the main problems with having unequal sizes between groups is that this inequality can create heterogeneous variance...
  2. K

    Unsure if I need to transform my data or use a p-value correction for multiple comps.

    Hello all, Right off the bat I'd like to say that I'm pretty new to statistics and am having to employ some for analysing the results of a listening test I conducted for my masters thesis (in Environmental Acoustics), so apologies if I struggle to explain myself clearly! Essentially, my...
  3. R

    Why not go with tests dealing with unequal variances/unbalanced sample size first?

    Hi All, Here is the context: a lot of texts for hypothesis testing/ANOVA first examine the cases where either the number of samples per group are the same (n1 = n2 = n3 = ...= nn) or the variances for each group are comparable (s1 = s2 = s3 =... = sn). And a lot of times, I see "Conduct the...
  4. F

    Kruskal-Wallis & Regression: unequal n, unequal sd & non-normal dep.var.

    Hello and thank you for reading this thread! My problem is as follows: I conducted a simple experiment to check for the effect of gender and gender pairing in the outcome of a game (the ultimatum game, I won't bother you with unnecessary details). Important for my question to you, is...