Flew assumed that there are two mutually exclusive classes of statements, «falsifiable» and «unfalsifiable». (religion-online.org)
They do not warrant separating people into exclusive classes such as old and young, male and female, workers and managers, rich and poor, and dealing with the members of each class in the same fashion over a broad range of relationships. (religion-online.org)
Latent class analysis is a statistical method well suited for grouping categorical data into latent classes18, 19 and has a number of medical applications, such as evaluation of diagnostic systems20 - 23 and generation of epidemiologic estimates using symptom data.24, 25 Latent class analysis tests whether a latent variable, specified as a set of mutually exclusive classes, accounts for observed covariation among manifest, categorical variables. (jamanetwork.com)