Guest Researcher, National Institute of Standards and Technology, Gaithersburg, MD
(Received 22 June 1990; accepted 21 February 1991)
It is shown that the usual analysis-of-variance model with interaction terms can be a hindrance to the understanding of data rather than a useful tool. An alternative model, especially useful for the analysis of interlaboratory test data, is discussed. However, the best treatment of certain types of data is obtained by an analysis that involves minimal prior assumptions. An example is discussed that illustrates the thesis of this paper.
Paper ID: JTE12593J