Figure 2. Principle Component Analysis (PCA) of probabilistic cancer risk estimates under dry weight (A) and per mg nicotine basis (B).
Two dimentional PCA of probabilistic cancer risk estimate from eight carcinogens (benzo[a]pyrene, cadmium, Formaldehyde, NDMA, NNN, NNK, NAB, and lead). x axis, first principal component 1; y axis, second principal component 2. The ellipses are 95% confidence limits of each group.