CONICET | Buscador de Institutos y Recursos Humanos

In this paper, we address the question of comparison between populations of trees. We study an statistical test based on thedistance between empirical mean trees, as an analog of the two sample z statistic for comparing two means. Despite its simplicity, we can report that the test is quite powerful toseparate distributions with different means but it does notdistinguish between different populations with the same mean, a more complicated test should be applied in that setting. The performance of the test is studied viasimulations on Galton-Watson branching processes. We also show an application to a real data problem in genomics.