INTERPRETING YOUR DATA
So you have just received your localized crime report from @guardiancrime. We have worked hard to make our visual product as self-explanatory as possible, but here we will elaborate nonetheless.
National Percentile: the National Percentile figure displayed in the top lefthand corner of the visual is extremely important. Quite simply, it represents the percent of cities nationwide that are "more dangerous" than your city (or more precisely, have a higher crime rate per capita than your city). For example, as shown, only 26% of cities nationwide are "more dangerous" than Boston. With this it could also be said that 74% of cities nationwide are "safer" than Boston (100 - 26% = 74%). The higher a city's National Percentile value is, the "safer" the city.
Statewide Percentile: this statistic is practically identical to the National Percentile statistic in nature. However, instead of applying to all cities nationwide, this statistic applies only to cities statewide. Statewide Percentile represents the percent of cities statewide that are "more dangerous" than your city.
Percentage Change in Crime: this three-part bar graph tells the story of a city or town's crime history. Each bar represents a percentage change in total crime per capita over the past 5 years. A negative number means crime is falling, and a positive percentage means crime is on the rise. This graph is great for providing quick insight into an area's crime trends - is it getting safer or more dangerous?
Violent/Property Crime Comparison: another three-part bar graph, this time showing a city's violent/property crime rate (per 100,000 people) as compared to that of the state and that of the country. This graph pulls data only from the most recent year of the F.B.I.'s Uniform Crime Report database. Those numbers above the graph (as labeled) represent the total count of each particular crime annually and their rate per 100,000 people as well.
Historical Trending in Violent/Property Crime: this multi-year graph also details an area's historical trending in crime. Each bar represents the total number of crimes for a given year. Quite obviously, a downward trend over time would represent a decrease in crime, and an upward trend would represent an increase.