Kruskal-Wallis multcompare comparison intervals
6 views (last 30 days)
currently I am analysing results of my study and I found that a good multcomparison for it would be using the kruskalwallis with dunn-sidak.
My question is now, how to interpret the comparison intervals, which are not confidence intervals. I know, that if they do not overlap, the data comes from different distributions. But how are these comparison intervals generated?
Through researching and playing with the data and multcompare graphs I found that the width of the comparison intervals equals to 4 x the standard error (obtained through [m] = multcompare(stats)). Why is that the case?
However, I cannot find a reference of how these standard errors are calculated. And I cannot find anything on the MATLAB documentation.
Can you help me?
Another question is how do I label the x-axis of the multcompare graph for a publication? In principal, 'ranks' should be correct, right?
Thank you and kind regards