Data Visualization


Using visual communication to better explain complex information so you write less




@bayreporta

Considerations


Tell one story.

Think less, understand more.

Respect the chart.

Tell one story


What is the most important information you're trying to convey?



What's the story?



Source: 538

What's the story?


Source: New York Times

What's the sTory?

Source: Globe and Mail



Think less, understand more


Consider data literacy.

Accuracy.

Avoid gimmick.

WTF?


consider data literacy

Source: UK Guardian

Accuracy















Source: FOX News





Avoid gimmick



Source: Financial Times

WTF?




Source: Canadian Broadcast Corporation

Respect the Chart


Line Chart

Bar Chart

Pie Chart

Stacked Bar Chart

Scatter Plot Chart


Line Chart


Great for showing trends over time.

Works well with one or many variables.

Make sure chart is "zeroed."



Line Chart


Do: Clean and clear
Source: Mother Jones

LINE CHART


Don't: Not zeroed, confusing labeling
Source: Fox News

Bar Chart


Great for ranking data.

Great for comparison.


BAr cHart














Do: Clean, simple and ranked
Source: 538


BAR CHART




Don't: Confusing,  better ways to approach
Source: New York Times

Pie Chart


Showing parts of a whole in isolation.

Working with few variables. 

Pie Chart

Do:
simple and clear

Source: Joystick Tales

Pie Chart

Don't for the love of the Great Pumpkin:











Source: THINK Magazine

Stacked Bar Chart


Compare parts of whole without distortion.

Makes comparing multiple bars easier.

Can be ranked as well.




STACKED BAR CHART


Do: Ranked, Equals 100%
Source: EdSource

Stacked Bar Chart












Don't: This doesn't add up to 100%!

Source: Flowing Data


Scatterplot Charts


Great for comparing two variables.

Shows distribution.

Scatter plot Charts


Source: New York Times

What to take home


Simplify.

Let the data tell the story.

Tell one story in a chart, even if there are many.

Get inspiration.

Inspiration


Flowing Data

Eager Eyes

Edward Tufte

Guardian Data Blog

NICAR Listserv