• Datafile Name: MichelsonDownload .TXT file
  • Datafile Subject: Physics,
  • Story names: Speed of Light,
  • Reference: Stigler, Stephen M. (1977). Do Robust Estimators Work with Real Data? The Annals of Statistics 5:4, 1075.
  • Authorization: contact author
  • Description: Michelson's measurements of the velocity of light in air. In 1879, A. A. Michelson made 100 determinations of the velocity of light in air using a modification of a method proposed by the French physicist Foucault. The data are given here as reported by Stigler. The numbers are in km/sec, and have had 299,000 subtracted from them. The currently accepted "true" velocity of light in vacuum is 299,792.5 km/sec. Stigler has applied corrections used by Michelson and reports that the "true" value appropriate for comparison to these measurements is 734.5. Each trial may be a summary of several experimental observations.
  • Number of Cases 100
  • Variable Names:
    1. Velocity: Velocity
    2. Trial#: Trial number

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