Jeff-alytics

Jeff-alytics explores trends and anomalies in crime data with a focus on national and regional crime rates, law enforcement agency sizes, and firearm sales. It analyzes murder, violent crime, property crime, gun violence, and the impact of data reporting changes, offering insights into current and potential future crime trends.

Crime Data Analysis National Crime Trends Violent and Property Crime Rates Firearm Sales and Legislation Law Enforcement Agency Dynamics Data Reporting and Methodology Specific State Crime Trends

The hottest Substack posts of Jeff-alytics

And their main takeaways

Under The Clearance Rate Data Hood

412 implied HN points • 15 Jan 24
🇺🇸 U.S. Politics Data Analysis Crime Rates
  1. Reported clearance rates for all crimes have fallen since 2019.
  2. Clearance rates significantly dropped in 2020, 2021, and 2022, affecting big cities and suburbs.
  3. Accessing clearance rate data from different years can be challenging due to varied reporting methods and data constraints.
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The FBI's National Crime Estimates for 2022 Should Be Much Better

78 implied HN points • 18 Jul 23
🇺🇸 U.S. Politics Crime data Law enforcement
  1. The FBI's National Crime Estimates for 2022 are expected to improve due to a new reporting system called NIBRS.
  2. NIBRS allows for more detailed crime data reporting and eliminates the hierarchy rule for reporting offenses.
  3. The transition to NIBRS is still ongoing, but allowing non-NIBRS agencies to submit data should strengthen national crime estimates in the meantime.

Murder at Midyear

78 implied HN points • 30 Jun 23
🇺🇸 U.S. Politics Crime Statistics FBI Trends
  1. Murder rates are decreasing in big and small cities across the US.
  2. Guesstimating the national murder trend is challenging due to lack of standardized reporting processes.
  3. Leading indicators, like the Gun Violence Archive, suggest a potential 8-10% decline in national murders for 2023.

A New Crime Data Quiz!

98 implied HN points • 25 Apr 23
🚌 Education Crime data Data Trends
  1. Jeff Asher created a quiz on crime data and trends with interesting facts and questions.
  2. The quiz covers topics like murder rates, law enforcement reporting systems, and crime definitions.
  3. Readers can test their knowledge and learn new information through the quiz.

A Jeff-Alytics Mailbag!

39 implied HN points • 27 Jun 23
🇺🇸 U.S. Politics Law enforcement
  1. Traffic stops in New Orleans dropped significantly after the 2019 cyber attack due to various factors like COVID shutdown and police attrition.
  2. Improved medical care at University Medical Center in New Orleans may have impacted the fatality rate of shooting incidents.
  3. Data on juvenile crime, especially in vehicle-based crimes, is challenging to measure accurately due to reliance on arrests.

Grading Your Crime Data Quiz

39 implied HN points • 05 May 23
🚌 Education Crime data Data Analysis
  1. Readers struggled with a crime data quiz and need to do better on the final exam.
  2. Questions on past crime trends and definitions were answered correctly by most readers.
  3. Challenges were faced on questions about specific crime data facts and statistics.

What We Mean When We Say...Mass Shooting vs Active Shooting

19 implied HN points • 25 May 23
🇺🇸 U.S. Politics Gun Violence Mass Shootings
  1. Active shootings and mass shootings are not the same; they have distinct definitions.
  2. Active shootings involve ongoing incidents with intent to kill people, while mass shootings involve multiple victims in a single incident.
  3. It's important to correctly differentiate between active shootings and mass shootings to understand the nuances of gun violence data.