The data (X1, X2, X3, X4, X5, X6, X7) are for each city.
X1 = total overall reported crime rate per 1 million residents
X2 = reported violent crime rate per 100,000 residents
X3 = annual police funding in $/resident
X4 = % of people 25 years+ with 4 yrs. of high school
X5 = % of 16 to 19 year-olds not in highschool and not highschool graduates.
X6 = % of 18 to 24 year-olds in college
X7 = % of people 25 years+ with at least 4 years of college
Reference: Life In America's Small Cities, By G.S. Thomas
crime data (text file)