Nunes, CéliaFerreira, DárioFerreira, Sandra S.Mexia, João T.2020-02-072020-02-072013http://hdl.handle.net/10400.6/9119In many relevant situations, such as in medical research, sample sizes may not be previously known. The aim of this paper is to extend one and more than one-way analysis of variance to those situations and show how to compute correct critical values. The interest of this approach lies in avoiding false rejections obtained when using the classical fixed size F-tests. Sample sizes are assumed as random and we then proceed with the application of this approach to a database on cancer.engCritical valuesOrthogonal ANOVARandom degrees of freedomRandom sample sizesjournal article10.1080/00949655.2013.791293