* This article consists of the main text, but not the appendices, of the report of a committee appointed in 1950 by S. S. Wilks as President of the American Statistical Association, to review the statistical methods used by Alfred C. Kinsey, Wardell B. Pomeroy, and Clyde E. Martin in their Sexual Behavior in the Human Male (Philadelphia, W. B. Saunders Co., 1948). For further details on the appointment of the committee and its charge, see Section 1, p. 676 below. For an outline of the appendices, as well as of this paper, see Section 3, pp. 678–81, Appendix G, “Principles of Sampling,” will appear as an article in the March issue of this Journal. The full report, including both the text given here and the appendices, will be published as a monograph by the American Statistical Association in 1954.