Fig. 6
From: Looking beyond appearances: a multi-analytical approach on the prehistoric clay weights
Model-based cluster analysis of clay weights data set manufacture related categories: Inclusions frequency, Inclusions minimum size, Inclusions maximum size, Voids frequency, Voids minimum size, Voids maximum size. a Optimal number of clusters selection, using the Bayesian information criterion (BIC). Note the number of clusters suggested; b Model-based classification plot. Circles represent 95% confidence level ellipses; c Clay weights classification plot by site; d Model-based uncertainty cluster plot for the uncertain observations. Circles represent 95% confidence level ellipses. Note that the larger symbols indicate the more uncertain observations