Clear Filters
Clear Filters

What type of multiple comparisons is used in multcompare?

5 views (last 30 days)
Hi everybody,
I've used the following function after performing Kruskal Wallis test:
c = multcompare(KW_stats(1,1).name)
Does anyone know what type of multiple comparisons is used? FDR, Bonferroni?
Best,
Eric

Answers (1)

Qu Cao
Qu Cao on 23 Aug 2016
Edited: Qu Cao on 23 Aug 2016
Hi Eric,
You can specify the type of comparison as documented at the following link:
The default type is 'tukey-kramer'.
Thanks,
Qu
  1 Comment
Lingyun GUO
Lingyun GUO on 10 Jul 2020
Edited: Lingyun GUO on 10 Jul 2020
Dear Cao:
I want to ask
I have 3 sets of data. It has been organized into two columns The first column is basedata; The second column is the grouping basis.
G1(:,1)=rand(30,1);
G1(:,2)=1;
G2(:,1)=rand(32,1);
G2(:,2)=2;
G3(:,1)= rand(30,1);
G3(:,2)=3;
X=[G1;G2;G3]; % size is (92*2).
[P,anovatab,stats] = kruskalwallis(X(:,1),X(:,2));
c2=multcompare(stats);
The answer is:
1 2 -18.21 -2.31 13.60 0.94
1 3 -11.96 4.20 20.36 0.82
2 3 -9.40 6.51 22.41 0.60
In order to verify that the data is accurate, I continued to carry out two separate KW test data.
A= [G1;G2];
[P,anovatab,stats] = kruskalwallis(A(:,1),A(:,2));
c2=multcompare(stats);
The answer is:
1 2 -10.34 -1.35 7.63 0.77
Got the p value of their difference. Why, Which p value can truly reflect the difference between G1 and G2?
I'm looking forward to your reply very much.

Sign in to comment.

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!