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Letter to the Editor---Attempts to Validate Certain PERT Statistics or “Picking on PERT”

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  • Frank E. Grubbs

    (Ballistic Research Laboratories, Aberdeen Proving Ground, Maryland)

Abstract

This letter indicates the restrictions on the Beta Distribution that are required to validate the use of PERT means and variances. The conditions appear to be rather restrictive, thereby limiting the generality of application in computing PERT probabilities. The subjective nature of the PERT estimation problem is also discussed.

Suggested Citation

  • Frank E. Grubbs, 1962. "Letter to the Editor---Attempts to Validate Certain PERT Statistics or “Picking on PERT”," Operations Research, INFORMS, vol. 10(6), pages 912-915, December.
    • Handle: RePEc:inm:oropre:v:10:y:1962:i:6:p:912-915
    DOI: 10.1287/opre.10.6.912
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    Cited by:

    1. Moayyad Al-Fawaeer & Abdul Sattar Al-Ali & Mousa Khaireddin, 2021. "The Impact of Changing the Expected Time and Variance Equations of the Project Activities on The Completion Time and Cost of the Project in PERT Model," International Journal of Business and Economics, School of Management Development, Feng Chia University, Taichung, Taiwan, vol. 20(2), pages 119-140, September.
    2. Moayyad Al-Fawaeer & Abdul Sattar Al-Ali & Mousa Khaireddin, 2021. "The Impact of Changing the Expected Time and Variance Equations of the Project Activities on The Completion Time and Cost of the Project in PERT Model," International Journal of Business and Economics, School of Management Development, Feng Chia University, Taichung, Taiwan, vol. 20(2), pages 1-22, September.
    3. Barbara Gładysz, 2017. "Fuzzy-probabilistic PERT," Annals of Operations Research, Springer, vol. 258(2), pages 437-452, November.
    4. Christel Faes & Marc Aerts & Saskia Litière & Estelle Méroc & Yves Van der Stede & Koen Mintiens, 2011. "Estimating herd prevalence on the basis of aggregate testing of animals," Journal of the Royal Statistical Society Series A, Royal Statistical Society, vol. 174(1), pages 155-174, January.

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