This is Dataplot data file CHALLENG.DAT NASA Challenger Disaster Data Launch Date = January 28, 1986 Projected Temperature = 31 degrees F Source--Edward Tufte Handout & NASA & Morton Thiokol Number of Observations = 24 Number of Variables per line image = 4 Order of Variables on a line image-- 1. Response 1 = Number of Failed O-Rings (0, 1, 2, or 3) 2. Response 2 = Type of Failure (0 = No Damage 1 = Primary O-Ring Heating 2 = Primary O-Ring Erosion 3 = Primary O-Ring Blowby 4 = Secondary O-Ring Heating 3. Factor 1 = Flight ID (1 to 24) 4. Factor 2 = Temperature To read this into Dataplot-- SKIP 25 READ CHALLENG.DAT Y1 Y2 FLIGHT TEMP # of Primary Flight Temperature Failed Type of O-Rings Failure -------------------------------------- 0 0 1 66 1 2 2 70 0 0 3 69 0 0 4 80 0 0 5 68 0 0 6 67 0 0 7 72 0 0 8 73 0 0 9 70 1 2 10 57 1 1 11 63 0 0 12 78 1 2 13 70 0 0 14 67 3 3 15 53 0 0 16 75 0 0 17 67 0 0 18 70 0 0 19 81 0 0 20 76 0 0 21 79 2 3 22 75 0 0 23 76 1 2 24 58