Murder and Non-Negligent Manslaughter Rates in Southern and Western America

The variation in violent crime rates in the U.S. has been a persistent concern in the criminal justice system, notably homicides and offenses like murder and non-negligent manslaughter (NNM). Prior research has suggested that socioeconomic factors like poverty, firearm availability, population density, along with regional and cultural differences, could be a primary contributing factor to geographic disparities in violent crime rates. It is hypothesized that southern states will exhibit higher mean murder and NNM rates than those in western states. Crime data was collected from the Statista database and from the U.S. Census Bureau. Descriptive statistics were used to summarize trends, and a t-test assuming unequal variances was conducted to determine statistical significance. The south had a higher mean rate (M=6.78, SD=1.66) than the west (M=4.29, SD=2.46). There was statistically significance difference (p=0.006), supporting the hypothesis. This suggests that regional context can be meaningful for crime patterns. Future research should include other regions of the U.S. to understand better the underlying causes of the geographic disparities in homicide rates.