***** To join INSNA, visit http://www.insna.org ***** Dear Socnetters, In a network of interlocking directorates, I have the (edge)degree distributions at two time periods. Now I would like to say something about the significance of the differences between the mean degrees (it drops). However, it seems that simple mean comparisons won't do the job since these assume a normal distribution, which is not the case with edge degree in these networks. I came across Mann-Whitney, which seems to be better suited. However, I am not familiar with it and might overlook important assumptions. Any suggestions on the best way to say something about significance of difference in means of degree distributions? Thanks, Eelke de Galan Groep Rutgers van Rozenburglaan 2 3744 MC Baarn Tel.: 035 - 69 48 000 Fax.: 035 - 69 48 200 www.galangroep.nl KvK Gooi-en Eemland nr. 32059625 _____________________________________________________________________ SOCNET is a service of INSNA, the professional association for social network researchers (http://www.insna.org). To unsubscribe, send an email message to [log in to unmask] containing the line UNSUBSCRIBE SOCNET in the body of the message.