Home About Us CJIS UCR Crime in the U.S. 2011 Crime in the U.S. 2011 Tables Table 21

Table 21 Data Declaration

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Table 21 Data Declaration

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Robbery, by State, Types of Weapons, 2011

The FBI collects these data through the Uniform Crime Reporting (UCR) Program.

General comments

  • This table provides the types of weapons used in robbery offenses.  The data are based on the aggregated data from agencies within each state for which weapon information was reported to the FBI.  The table includes the number of agencies that submitted data by state and the population covered by those agencies.
  • The FBI received limited weapon data from the Illinois state UCR Program.

Methodology

  • The data used in creating this table were from all law enforcement agencies that submitted complete offense reports for 12 months in 2011.
  • The weapon totals are aggregated from all robbery offense data for which the FBI received weapon breakdowns.

Population estimation

The FBI calculated 2011 state growth rates using the U.S. Census Bureau’s 2010 decennial state/national population figures and 2011 provisional state/national population estimates.  The FBI then estimated population figures for city jurisdictions by applying the 2011 state growth rate to the 2010 U.S. Census Bureau data.