Anscombe’s quartet comprises four datasets that have nearly identical simple descriptive statistics, yet appear very different when graphed
https://www.targetprocess.com/articles/visual-encoding/
https://bost.ocks.org/mike/selection/
https://medium.com/@mbostock/introducing-d3-scale-61980c51545f#.vrosb58sb
https://medium.com/@mbostock/introducing-d3-shape-73f8367e6d12#.7mpy5586y
https://bost.ocks.org/mike/bar/
https://bost.ocks.org/mike/circles/
https://bost.ocks.org/mike/leaflet/