How to Choose a Chart

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Nov 17, 2015 - doughnut chart. Group A. Group B categorical conditional doughnut chart. Two Things At A Time. Continuous by Continuous continuous contin.
How to Choose a Chart Andy Grogan-Kaylor 2015-11-17

How to Choose a Chart Choosing the right chart to represent your data can be a daunting process. I believe that a starting point for this thinking is some basic statistical thinking about the type of variables that you have. At the broadest level, variables may be conceptualized as categorical variables, or continuous variables. • categorical variables represent unordered categories like gender, or religious affiliation. • continuous variables represent a continuous scale like a mental health scale, or a measure of neighborhood quality.

One Thing At A Time

Two Things At A Time

Continuous

Continuous by Categorical

histogram

conditional histogram count

count

Group A

50 0

100 50 0

0

100

200

300

0

100 200 300

0

100 200 300

continuous

continuous

boxplot

conditional boxplot

300

continuous

continuous

Group B

100

200 100

300 200 100 Group A

Group B

categorical

density

conditional density Group A

0.009

density

density

0.012

0.006 0.003 0.000

Group B

0.015 0.010 0.005 0.000

100

200

300

100 200 300

continuous

100 200 300

continuous 1

mean of continuous

mean of continuous

barchart of mean 200 150 100 50 0

200 150 100 50 0

Group A

Group B

categorical

violin plot

conditional violin plot Group A

300

continuous

continuous

conditional barchart of means

200 100

Group B

300 200 100

categorical

dotplot

conditional dotplot Group A

0.75

density

density

1.00 0.50 0.25 0.00 100

200

300

100 200 300

continuous One Thing At A Time

Group B

1.00 0.75 0.50 0.25 0.00 100 200 300

continuous Two Things At A Time

Categorical

Categorical by Categorical

bar chart

conditional bar chart Group B

count

count

Group A

categorical

categorical

2

conditional horizontal bar chart Group A

categorical

categorical

horizontal bar chart

Group B

count

pie chart

count

conditional pie chart Group A

Group B

categorical

categorical

doughnut chart

conditional doughnut chart Group A

categorical

Group B

categorical

Two Things At A Time Continuous by Continuous

scatterplot with fit line continuous

continuous

scatterplot

continuous

continuous

3

smoother count 25 20 15 10 5

continuous

continuous

hexagon plot

continuous

continuous

contour plot continuous

continuous

area plot

continuous

continuous

Graphics made with the ggplot2 graphing library created by Hadley Wickham. Available online at https://sites.google.com/a/umich.edu/agrogan/data-visualization

How to Choose a Chart by Andrew Grogan-Kaylor is licensed under a Creative Commons AttributionShareAlike 4.0 International License. Last updated:

November 17 2015 at 19:10

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