xkcd's Linear Regression on September 19, 2016 humor linear equation linear relationship r^2 regression + xkcd humor linear equation linear relationship r^2 regression xkcd
John Venn's Google Doodle on November 03, 2014 data is beautiful Google +2 graphs and charts interactive r^2 shared variance Venn data is beautiful Google graphs and charts interactive r^2 shared variance Venn
Kristoffer Magnusson's" Understanding correlations, an interactive visualization" on September 25, 2014 correlation interactive r^2 scatter plots + shared variance correlation interactive r^2 scatter plots shared variance
Jess Hagy's "This is Indexed" on May 06, 2013 blogosphere correlation distributions graphs and charts humor + r^2 blogosphere correlation distributions graphs and charts humor r^2