. Bulletins of American paleontology. were replaced with means calculated only from the other specimens in each group. Discriminant scores for the remaining specimens were then reported by the procedure in relation to these designated groups. Miss- ing values in these nonselected specimens were re- placed by SPSS-X with mean values calculated from the entire data matrix. Results Factor .-l« —Text-figure 10 shows a plot of scores on the first two factors for all 318 specimens in the analysis. The four select groups are indicated by outlines. The maryiandica-integra and suhcyiindrica- q
. Bulletins of American paleontology. were replaced with means calculated only from the other specimens in each group. Discriminant scores for the remaining specimens were then reported by the procedure in relation to these designated groups. Miss- ing values in these nonselected specimens were re- placed by SPSS-X with mean values calculated from the entire data matrix. Results Factor .-l« —Text-figure 10 shows a plot of scores on the first two factors for all 318 specimens in the analysis. The four select groups are indicated by outlines. The maryiandica-integra and suhcyiindrica- quadrata select groups form two largely nonoverlap- ping clusters, and this separation is clearer along the second factor axis than along the first. There is a high degree of overlap of the four total groups with each other. AAN(13). B. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Paleontological Research Institution (Ithaca, N. Y. ); Columbia University. Ithaca, N. Y. , Paleontological Research Institution [etc. ]
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