• Datafile Name: Student t-distributionDownload .TXT file
  • Datafile Subject: Famous Datasets,
  • Story names: Student t-distribution,
  • Reference: R.A. Fisher, The Design of Experiments, 3rd Ed., Oliver and Boyd, London, 1942, p. 27. W.S. Gosset, "The Probable Error of a Mean," Biometrika, 6 (1908), 1-25.
  • Authorization: free use
  • Description: A dataset given as an example in Gosset's 1908 paper on "The Probable Error of a Mean," which introduced a form of what later became known as Student's t-distribution.
  • Number of Cases 15
  • Variable Names:
    1. DIF: Difference in height (eighths inches) for 15 pairs of plants (cross-fertilized minus self-fertilized Zea mays) raised by Charles Darwin
    2. ADD: Additional sleep (hrs) gained by patients from the use of laevohysocyamine hydrobromide (referenced by Gosset)

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