Communications to the Editor—Supplement to “The Derivation of Probabilistic Information for the Evaluation of Risky Investments”

This note is intended to clarify an issue that has been raised regarding one section of a recent paper by this writer [Hillier, Frederick S. 1963. The derivation of probabilistic information for the evaluation of risky investments. Management Sci.9 (3, April) 443–457.]. This issue concerns the proposed method for calculating the cumulative distribution function of internal rate of return. The most relevant passages from the paper follow.