Dataset: challenger.dat Source: S.R. Dalal, E.B. Fowlkes, B. Hoadley (1989). "Risk Analysis of the Space Shuttle: Pre-Challenger Prediction of Failure," Journal of the American Statistical Association, Vol. 84, #408, pp. 945-957. Description: Temperature and Failure of field-joint O-Ring failures for 23 pre-Challenger space shuttle flights. Variables/Columns Flight sequence number 7-8 Temperature 15-16 # O-Ring Field joints with erosion or blowby 24 Indicator of erosion or blowby 32