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SQL Saturday Cork
Welcome to Cork
Data Visualizations that are just horrible by
Jen Stirrup
Examples of the worst data visualization ever
Every American should
have above average
income, and my
Administration is going to
see they get it.(Bill
Clinton during his
campaign)
Objectives
Examples of the worst data visualization ever
Objectives
What?
Objectives
Use of colour:
dark colours
are considered
to have higher
values
What?
Examples of the worst data visualization ever
Objectives
Inaccurate
source of
data
Inaccurate
Examples of the worst data visualization ever
Examples of the worst data visualization ever
Examples of the worst data visualization ever
Examples of the worst data visualization ever
Challenger
Challenger
Challenger
Why visualise?
Zimbabwean inflation rates (official) since independence
Date Rate Date Rate Date Rate Date Rate Date Rate Date Rate
1980 7% 1981 14% 1982 15% 1983 19% 1984 10% 1985 10%
1986 15% 1987 10% 1988 8% 1989 14% 1990 17% 1991 48%
1992 40% 1993 20% 1994 25% 1995 28% 1996 16% 1997 20%
1998 48% 1999 56.9% 2000 55.22% 2001 112.1% 2002 198% 2003 598%
2004 132% 2005 585.84% 2006 1,281% 2007 66,212% 2008
231,150,
888%
(July)
Think with your Eyes: Data Visualisation
Zimbabwean inflation rates (1980 – 2008)
Translated into picture…
Questions?
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Examples of the worst data visualization ever