These are the data on the O rings you selected to decide whether to launch the Challenger Space Shuttle.

It is January 27th, 1986 and the temperature outside is 27 degrees Fahrenheit. The vertical (Y) axis in the plots to the right are the failures, ordered by number of broken O rings in previous launches at various temperatures, none causing shuttle failure.

Do you recommend a launch or not to launch?

Ed Tufte on Visualizing Information

Complete data