New York Police Department’s Stop, Question, and Frisk Practices Group G Shuhan Liu Ivana Grubesic Harishana Parthiban Ram Sait Pablo Romero Rodriguez Tianhui Yu

Agenda Data Selection Q 1: Primary factors for people being stopped Q 2: Whether or not “Stop, Question and Frisk” procedure is decreasing the guns Q 3: Whether crime in general has decreased? Q 4: Whether there seems to be a bias on the part of the officers? Our Predictions and Further Consideration

Data Selection Data 2003 -2015 The Stop, Question and Frisk Data http://www.nyc.gov/html/nypd/html/analysis_and_planning/stop_question_and_frisk_report.shtml Additional Data 2016 The Stop, Question and Frisk Data Method Clean data Select Significant Variables Calculate percentage Use JMP Analysis Summary Results

Q 1: What are primary factors for people being stopped? 1-4

Q 2: Whether or not “Stop, Question and Frisk” procedure is decreasing the guns? 1-4 gun weapon race rest

Q 2: Whether or not “Stop, Question and Frisk” procedure is decreasing the guns? Note: The number of “guns recovered” was derived by adding whether at least one pistol, rifle, assault weapon and/or machine gun was found during the stop. UF-250 forms do not record the quantity of items found

% of Weapons over years

Q 2: Whether or not “Stop, Question and Frisk” procedure is decreasing the guns? Data Set: pistol, rifle, assault weapon and/or machine gun, and other weapon R Square = 0.9122 T =10.69 F =114.34 P< 0.0001 Conclusion: Stop-and-Frisk doesn’t get guns off the street Guns are found in less than 0.2 percent of stops. That is an unbelievably poor yield rate for such an intrusive, wasteful and humiliating police action. Yet, stop-and-frisk has increased more than 600 percent under Bloomberg and Kelly. And the rate of finding guns is worsening as the NYPD stops more innocent people each year. Prediction Stops has no relationship with Guns

Q 3: Whether crime in general has decreased? Arrest Percentage

Q 3: Whether crime in general has decreased? Data: Total stop from 2003 to 2015, total arrest from 2003 to 2015 RSquare =0.935167 T = 13.16 F = 173.9 P < 0.0001 Stop-and-Frisk doesn’t reduce crime and keeps people safer No research has ever proven the effectiveness of New York City's stop-and-frisk regime, and the small number of arrests, summonses, and guns recovered demonstrates that the practice is ineffective. Crime data also do not support the claim that New York City is safer because of the practice. While violent crimes fell 29 percent in New York City from 2001 to 2015, other large cities experienced larger violent crime declines without relying on stop and frisk abuses: 59 percent in Los Angeles, 56 percent in New Orleans, 49 percent in Dallas, and 37 percent in Baltimore. Stop-and-Frisk abuses corrode trust between the police and communities, which makes everyone less safe.

Q 4: Whether there seems to be a bias on the part of the officers?

Total Stop/ Race

Total Stop/ Race

Summary of Race output Total Stop/ R Square Arrest/ R Square Frisk/ R Square Total Stop/ T Arrest / T Frisk/ T F BLACK 0.9986 0.93342 0.9999 90.39 11.30 115 8169 ASIAN/PACIFIC ISLANDER 0.9670 0.953468 0.9655 17.96 14.31 16.68 322.6 AMERICAN INDIAN/ALASKAN NATIVE 0.96553 0.911843 0.9857 17.55 10.02 26.98 308 BLACK-HISPANIC 0.9813 0.947658 0.9976 24.04 13.44 67.21 577 WHITE-HISPANIC 0.9977 0.94322 0.0084 70.43 12.65 84.52 4960 WHITE 0.7742 0.872579 0.9836 20.41 7.17 25.62 416

Q 3: Whether there seems to be a bias on the part of the officers? Black has High RSquare, T, F value Stop-and-Frisk is discriminatory. Comparing police stops to violent crime suspects is bad math. Only 11 percent of stops were based on a description of a violent crime suspect. On the other hand, from 2003 to 2015, black and Latino residents made up almost 90 percent of people that were stopped, and about 88 percent of stops – more than 3.8 million – were innocent New Yorkers. Even in neighborhoods that are predominantly white, black and Latino New Yorkers face the disproportionate brunt.

In Brownsville, Brooklyn In 2009, 93 Out Of Every 100 Residents Were Stopped By The NYPD

What To Do If You’re Stopped By The Police Stay calm and in control of your words, body language and emotions. Don’t get into an argument with the police. Never bad-mouth a police officer. Remember, anything you say or do can be used against you. Keep your hands where the police can see them. Don’t run. Don’t touch any police officer. Don’t resist even if you believe you are innocent. If you complain at the scene, or tell the police they’re wrong, do so in a non-confrontational way that will not intensify the scene. Do not make any statements regarding the incident. If you are arrested, ask for a lawyer immediately. Remember officers’ badge numbers, patrol car numbers and physical descriptions. Write down everything you remember ASAP. Try to find witnesses and their names and phone numbers. If you are injured, take photos of the injuries as soon as possible, but make sure you get medical attention first. Ask for copies of your medical treatment files.

Question