Healey, Joseph F. Statistics : a tool for social research / Joseph F. Healey, Christopher Newport University. - Tenth edition. - Boston : Cengage Learning, Inc., 2015. - xxviii, 511 pages : illustrations. Includes index. ISBN: 9780357671238 Subjects--Topical Terms: Social sciences--Statistical methods.Statistics. LC Class. No.: HA 29 / HEA 2015.