I am looking for some help on a statistical test I could use on my dendrogram of gene expression. I have used the dendrogram/heatmap function in pheatmap to produce this, to see whether my samples cluster in any particular pattern. Obviously you can visually inspect the figure, but I would like something a bit more rigorous.
For example, it might be that the alpha individuals cluster together more than would be expected by chance (although it clearly looks as though this isn't the case). Can anyone recommend a program (perhaps an R package) which could implement a test of this nature? Thanks.