1. P

    Which non-parametric test to choose?

    Hello everyone, I have trouble figuring out which statistical test for differences between two groups to choose from: I have two groups, A and B. For each group member I measured a value X and shortly after a value Y. These values depend on each other. I calculated the difference between value...
  2. D

    Using Pre-Post data in a meta-analysis

    Hello, I am trying to figure out the best way to calculate an effect size for a single-group design when I do not know the pair-wise correlation or standard deviation for the difference scores. I have received mixed messages as to whether or not I can use the formula for independent measures...
  3. S

    2x2 contigency table non-independent but not paired data

    I am looking at male-biased sexual size dimorphism in a bird species (males average larger than females). I am interested in the proportion of males larger than females in breeding pairs. I have one proportion result "A" from observed breeding pairs. I then did random bootstrap resampling...