R软件内置数据集。
Davis数据集有5个变量（5列）和199个观察值（199个数据行）。这些观察值是定期从事锻炼的男性和女性的身高、体重数据；数据集中有总分数据缺失，以NA表示。
数据来源
Personal communication from C. Davis, Departments of Physical Education and Psychology, York University.
参考文献
[1] Davis, C. (1990) Body image and weight preoccupation: A comparison between exercising and non-exercising women. Appetite, 15, 13–21.
[2] Fox, J. (2008) Applied Regression Analysis and Generalized Linear Models, Second Edition. Sage.
[3] Fox, J. and Weisberg, S. (2011) An R Companion to Applied Regression, Second Edition, Sage.