© 1975 by Biometrika Trust
A note on Lancaster's definition of higher-order interactions
Abteilung Biomathematik, Universität Giessen Germany
An expression is given for the joint distribution function of a set of n random variables that uses only the (1,2,..., s)-dimensional marginal distributions (s = 2,... , n 1), but which assumes that the sth and higher-order interactions of Lancaster vanish. For s = 2 an application to qualitative data is outlined.
Key Words: Bahadur expansion Interaction of sth order Qualitative data