Reply—A Note on PERT Assumptions

Published Online:https://doi.org/10.1287/mnsc.33.10.1360

Littlefield and Randolph (Littlefield, T. K., Jr., P. H. Randolph. 1987. Another note on PERT times. Management Sci.33 1357–1359.) present the historical derivation of the PERT equations. A second derivation is possible, however, using a different set of assumptions.

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