NOTES 1 N. Rescher, Distributive justice (New York: Bobbs-Merrill, 1966). 2Ibid.,p. 33. a Many thanks to alert students who saved me from my ineptitude in arithmetic here! ' Sometimes "standard deviation" is defined slightly differently. However in that case the symbol 's' is usually used instead of 'a.' In effect s is simply an estimate of a. In any event, using s would not help Rescher but would make matters worse. For a and s, see for instance Solomon Diamond, Information and Error (New York: Basic Books, 1959), pp. 84-85, 62, 68-69. Or see Elmer B. Mode, Elements of Probability Statistics (Englewood Cliffs, N.J.: Prentice-Hall, 1966), p. 78, 252-53.