Data VisualizationTechniques and Interpretation

Seattle University Criminal Justice Leadership Institute

Aug 12, 2015

About Ben

UCLA BSME 2000

CLU MBA 2011

Director, Tableau Public

Author, Communicating Data with Tableau (O’Reilly 2014)

Blogger, DataRemixed.co

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Medtronic DiabetesLean Sigma MBB

UW PCEData Viz

Instructor

The Jones family house: burglarized on May 21st

Ben’s car: broken into on June 1st

Q: just how safe is Bellevue, anyway?

Crime in U.S. Cities

data viz and law enforcement

“’Data! Data! Data!’ he cried impatiently. ‘I can’t make bricks without clay!’”

Source: http://www.ucrdatatool.gov/Search/Crime/State/RunCrimeStatebyState.cfm

Since the mid 1990s, Crime is Down…

…and so is American’s confidence in the police

Source: http://www.gallup.com/poll/183704/confidence-police-lowest-years.aspx

why?

A perception of disparity

http://www.nydailynews.com/new-york/summons-broken-windows-racial-disparity-garner-article-1.1890567

http://www.nydailynews.com/new-york/nyc-crime/forgotten-record-murder-rate-cases-unsolved-article-1.1566572

A question of resource allocation

http://www.nydailynews.com/new-york/nyc-crime/forgotten-record-murder-rate-cases-unsolved-article-1.1566572

http://www.nydailynews.com/new-york/nyc-crime/forgotten-record-murder-rate-cases-unsolved-article-1.1566572

In NYC, murders are down…

…as are deaths and injuries of NYPD officers

https://public.tableau.com/profile/sarah.ryley#!/vizhome/NYPDOfficerInjuriesandFatalities/Dashboard1

…but officer-involved fatalities are not

https://public.tableau.com/profile/sarah.ryley#!/vizhome/NYPDdeaths/Dashboard1

http://tableaupicasso.com/militarization-of-police/

http://mappingpoliceviolence.org/nationaltrends/

Q: Why the spike in search for ‘civil forfeiture’ in Oct 2014?

https://www.google.com/trends/explore#q=%22civil%20forfeiture%22&geo=US&cmpt=q&tz=Etc%2FGMT%2B7

https://www.youtube.com/watch?v=3kEpZWGgJks

A: Last Week Tonight with John Oliver, Oct 5 2014

more examples

https://public.tableau.com/profile/liamboltonuk#!/vizhome/MappingLondonsCrimeRates/Dashboard1

https://public.tableau.com/profile/shine.pulikathara#!/vizhome/50YearsofCrime/USCrimeDashboard

http://public.tableau.com/profile/jeffs8297#!/vizhome/ACincinnatiCrimeVisualization/StartPage

http://old.seattletimes.com/flatpages/local/bicyclecollisionsinseattle.html

http://old.seattletimes.com/flatpages/local/interactivelicenseplatemap.html

Data Workshop:

1. Seattle PD 911 Responses2. Visualizing Survey Responses

https://data.seattle.gov/Public-Safety/Seattle-Police-Department-911-Incident-Response/3k2p-39jp

http://www.huffingtonpost.com/2015/04/22/law-enforcement-trust-poll_n_7118634.html

Using http://www.vischeck.com/

How much do you trust these law enforcement agencies?

pct of respondents who say they trust…

Horizontal stacked bars instead of vertical side-by-side

How much do you trust these law enforcement agencies?

pct of respondents who say they trust…

Positive Responses > 0, Negative Responses < 0

How much do you trust these law enforcement agencies?

pct of respondents who say they trust…

Change to color scheme that isn’t politically charged

For more survey tips, see:

http://www.datarevelations.com/visualizing-survey-data