The Context of Data Visualization - Data Visualization: A Successful Design Process - page 5

Sample data sets recreated from Anscombe, Francis J. (1973) Graphs in statistical analysis. American
Statistician, 27, 17-21
Ask yourself, what can you see in these sets of data? Do any patterns or trends jump
out? Perhaps the sequence of eights in the fourth set? Otherwise there's nothing
much of interest evident.
So what if we now visualize this data, what can we see then?
Image published under the terms of "Creative Commons Attribution-Share Alike", source: http://commons.
wikimedia.org/wiki/File:Anscombe%27s_quartet_3.svg