In order to help the Justice Department in the state of Texkansahomatucky a map that highlights the high crime counties in the state has been created. In order to determine which counties are high crime and which are low crime one has to first do some statistical calculations. Using the data provided by the state, one must first calculate the total crimes for each county. This can be done by adding all of the violent crime categories together for each county individually. Equation: (Murder + Rape + Robbery + Aggressive Assault = total violent crime). Then one must add the property crime categories together for each county individually. Equation: (Burglary + Larceny + MV Theft = total property crime) Once the total violent crime and total property crime numbers are obtained then they can be added together to obtain the total crime per county. Equation example: (Kent County total violent crime + Kent County total property crime = Kent County total crime).
Once the total crime per county has been calculated the results can be used to aid in finding the crime rate. However, to find an accurate crime rate for each county the proper equation must be used. It wouldn’t be fair to determine the crime rate for each county based upon the total number of residents divided by the total crime of the county because each county varies in both size and population and these factors are believed to effect crime rates. Incorrect equation: (county total number of residents / county total crime = crime rate). In order to properly analyze the data, the next step in the calculations is to determine the population density for each of the counties in Texkansahomatucky.
In order to find the population density for each county one must take the total population for each county individually and divide that number by the total area represented in square miles, for each county. Equation: (County population / total area in square miles = population density). This calculation provides the population density which is then used to calculate the overall crime rate for each county. Crime rate can then be found by taking the total number of crimes per county then dividing that number by the population density for that county. Equation example: (Kent County total crime / Kent County population density = Kent County crime rate).
Based upon this method of calculation it was found that the ten high crime counties in Texkansahomatucky are Kent, King, Lane, Clay, Jay, Kern, Cass, Bell, Cook, and Lake counties. The analysis also found that the ten low crime counties in Texkansahomatucky are Kane, Ray, York, Pike, Lee, Knox, Bay, Webb, Ida, and Nye counties. The crime rate ranking information can be found in a table in the appendix labeled Figure 1-1. The results of the crime rate calculations are displayed on a state map in the appendix in Figure 1-2. The original variables the state provided that were used for the statistical calculations can be found in the appendix in Figure 1-3.
Appendix
Figure 1-1
|County Name |Crime Rate |
|Kent County |30.78 |
|King County |25.34 |
|Lane County |20.57 |
|Clay County |17.43 |
|Jay County |16.39 |
|Kern County |15.01 |
|Cass County |14.77 |
|Bell County |13.48 |
|Cook County |13.23 |
|Lake County |13.09 |
|Kane County |12.87 |
|Ray County |12.50 |
|York County |12.00 |
|Pike County |11.60 |
|Lee County |11.37 |
|Knox County |10.76 |
|Bay County |9.43 |
|Webb County |9.29 |
|Ida County |8.45 |
|Nye County |4.37 |
Figure 2-2
The purple color highlights the high crime counties
