A scatter-plot matrix allows the organisation of different scatter-plots with similar variables into a matrix which can then be used to to look at all pairwise correlations in one place. This blog post from Junk Charts demonstrates how this can be done using data from Nate Silver's feature article about New York neighborhoods.
(Junk Charts, 2010)
Junk Charts, (2010), The scatter-plot matrix: a great tool, Retrieved from: http://junkcharts.typepad.com/junk_charts/2010/06/the-scatterplot-matrix-a-great-tool.html
'The scatter-plot matrix' is referenced in: