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Methodology

Measuring Crime Concentration (Part 1)

What constitutes concentration? In these articles we ask:

  • how do we count crimes? And how do we account for and control for heterogeneity in our observations (units with different area and populations)?
  • how do we decide if crime is concentrated? What measures are traditionally used?
  • if crime is purely random and thus isn't concentrated in any meaningful sense, will we still measure some concentration using traditional measures?
  • can we develop a "null hypothesis" statistical model to create a baseline measure, allowing us to differentiate between random and structural effects? What features must this model have to be realistic?
  • how do we develop this into a useful measure?