# 9.R: References

1. The Gallup Poll Monthly, November 1992, No. 326, p. 33. Supplemented with the help of Lydia K. Saab, The Gallup Organization.↩

2. A. de Moivre, 3d ed. (London: Millar, 1756).↩

3. ibid., p. 243.↩

4. F. N. David, (London: Griffin, 1962).↩

5. R. M. Kozelka, “Grade-Point Averages and the Central Limit Theorem," vol. 86 (Nov 1979), pp. 773-777.↩

6. W. Feller, vol. 1, 3rd ed. (New York: John Wiley & Sons, 1968), p. 254.↩

7. S. Stigler, (Cambridge: Harvard University Press, 1986), p. 203.↩

8. ibid., p. 136↩

9. ibid., p. 281.↩

10. Karl Pearson, vol. IIIB, (Cambridge at the University Press 1930.) p. 466. Reprinted with permission.↩

11. ibid., p. 282.↩

12. Karl Pearson, vol. IIIA, (Cambridge at the University Press 1930.) p. 9. Reprinted with permission.↩

13. W. S. Gosset discovered the distribution we now call the $$t$$-distribution while working for the Guinness Brewery in Dublin. He wrote under the pseudonym “Student." The results discussed here first appeared in Student, “The Probable Error of a Mean," vol. 6 (1908), pp. 1-24.↩