Data on O-rings in 23 space shuttle flights prior to the Challenger shuttle disaster of January 1986.
Challenger
A data frame with 23 observations on the following 3 variables.
Date
Data of launch
Temperature
Air temperature at launch (F)
Incident
Binary variable, 1 if one of the 0-rings on one of the booster rockets was damaged, 0 otherwise
Dala, S.~R., Fowlkes, E.~B., Hoadley, B (1989). Risk analysis of the space shuttle: pre-Challenger prediction of failure. J.~American Statistical Association, 84, 945-957.