2.38 Cheek teeth of extinct primates. Refer to the American D Journal of Physical Anthropology (Vol. 142, 2010) study MOLARS of the characteristics of cheek teeth (e.g., molars) in an extinct primate species, Exercise 2.9 (p. 38). In addition to degree of wear, the researchers recorded the dentary depth of molars (in millimeters) for 18 cheek teeth ex- tracted from skulls. These depth measurements are listed in the accompanying table. Summarize the data graphically with a stem-and-leaf display. Is there a particular molar depth that occurs more frequently in the sample? Data on Dentary Depth (mm) of Molars 18.12 16.55 19.48 15.70 19.36 17.83 15.94 13.25 15.83 16.12 19.70 18.13 15.76 14.02 17.00 14.04 13.96 16.20 Based on Boyer, D. M., Evans, A. R., and Jernvall, J. "Evidence of dietary differentiation among late Paleocene-early Eocene Plesiadapids (Mammalia, primates)." American Journal of Physical Anthropology, Vol. 142, 2010 (Table A3).

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