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Mapping for the Next Millennium How CrimeRisk™ scores are formed.

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Presentation on theme: "Mapping for the Next Millennium How CrimeRisk™ scores are formed."— Presentation transcript:

1 Mapping for the Next Millennium How CrimeRisk™ scores are formed

2 F Criminological and Policy Theory dictates that for a particular area, there is a correlation between predicted crime levels and the amount of social disorganization and decline F Crime Score data is modeled by Applied Geographic Solutions (AGS) using techniques much like those used to predict economic trends and weather Basic Premise of Crime Scores

3 CrimeRisk Scores F Demonstrate the likelihood of crimes occurring in specific areas across the US F Scores range from 1-2000 –Score of 100 is equal to the national average Examples: u Score of 200 is 2x the national average u Score of 5 is extremely low

4 How the Model Is Built: F Demographic Clusters are related to crime scores –According to geodemographic segmentation, people tend to gravitate towards communities of similar backgrounds, interests, and means F Demographic Clusters break people down into 65 groups based on characteristics such as: u Age u Income u Education Level u Rural vs. Urban u Family Status u Employment u Housing Characteristics * race and ethnicity are NOT factors in building these scores

5 Crime Statistics: F The FBI collects data from about 16,000 law enforcement jurisdictions at city, county, and state levels F The FBI then compiles the data into its annual Uniform Crime Report (UCR) F Virtually all law enforcement agencies participate FBI Uniform Crime Reports, Local Police Data, National Crime Surveys

6 Correlating the Statistics F Crime data is correlated for each cluster F An average score is determined for each cluster F The scores are calculated for each Census Block Group by looking at the demographic make-up (% of each cluster) in each block

7 Indexes Produced F Aggregate Crime Index –Crimes Against Persons (Combines the 4 below) u Murder u Rape u Robbery u Assault –Crimes Against Property (Combines the 3 below) u Burglary u Larceny u Motor Vehicle Theft

8 National Averages F 2001: latest fully published report per 100,000 –Murder 5.6 –Rape 31.8 –Robbery 148.5 –Assault 318.5 –Burglary 740.8 –Theft 2484.6 –Motor Vehicle Theft 430.6

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10 RiskMeter Sample Report

11 Questions? For Further Information, Contact CDS Business Mapping 67 Broad St - 6th Floor Boston, MA 02109 617-737-4444 www.cdsys.com www.riskmeter.com


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