Number of offenses per million population, log scale
Number of males of age 14-24 per 1,000 population, log scale
Indicator variable for southern state
Mean years of schooling, log scale
Police expenditure in 1960, log scale
Police expenditure in 1959, log scale
Labor force participation rate, log scale
Number of males per 1,000 females, log scale
State population size in hundred thousands, log scale
Number of nonwhites per 1,000 people, log scale
Unemployment rate of urban males, age 14-24, log scale
Unemployment rate of urban males, age 35-39, log scale
Wealth in tens of dollars, log scale
Income inequality, log scale
Probability of imprisonment, log scale
Average time served in state prisons, log scale