The introductory chapter presents a history of criminal justice statistics, followed by 10 chapters that emphasize a particular statistical technique and its use to study the given issue or problem. A chapter on the statistical technique of bar charts involves a comparative program analysis of drug testing on probationers and parolees. Measures of central tendency are discussed for two studies: one that examined the academic achievement of juvenile delinquents relative to intellectual ability and the identification of employment criteria and requisite skills for the position of police chief. A chapter on the measurement of crime involves a study of the nature of gang violence, and a study that used the chi square statistical- analysis technique focuses on the impact of domestic violence on juvenile delinquency. The use of the Pearson's r technique is described for a study of criminal justice students' perceptions of satanism. Regression analysis is discussed for two studies: one that focuses on local correctional systems and another that examines citizen perceptions of community policing. Student's t and Manova are used in a study that examines students' perceptions of policing both before and after completing a police-related course. The concluding chapter describes the use of Anova in a study of the influence of race on prison sentences for murder in 20th century Texas. For individual chapters, see NCJ-175405-14. Chapter tables and references and a subject index