As the number of officers on foot patrol increases, the rate of property crime decreases. There is no relationship between the income level of parents and the frequency of alcohol use by teenage children. There is a negative linear relationship between the probability of being arrested for armed robbery and the rate of armed robbery. As the probability of being arrested increases, the rate of armed robbery decreases. There is a curvilinear relationship between age and the number of criminal acts.
Criminal acts are infrequent both in early and later ages.
There is a moderately strong negative linear relationship between the median income level in a neighborhood and its rate of crime. As the median income level in a community increases, its rate of crime decreases. There is a weak positive linear relationship between the number of hours spent working after school and self-reported delinquency. As the number of hours spent working after school increases, the number of self-reported delinquent acts increases. There is a strong positive linear relationship between the number of prior arrests and the length of current sentence.