This paper focuses on the Kansas City Preventative Patrol Study and the
statistical validity of the findings. The experiment
was conducted in 1972 by the Kansas City Police to test the effects of police patrol on the incidence of crime. The study lasted over a year and was evaluated by the Police Foundation, which also provided funding and technical assistance for the study. The purpose of the study was to test the assumption that police patrolling the streets in marked cars can prevent individuals from committing crimes. This paper discusses why the
results of the Kansas City Preventative Patrol Study are not statistically valid. The paper is divided into three sections: a brief introduction of the study, the results, and why these results lack
statistical value.