Statistical PERT® Beta Edition

By PMI South Florida Chapter

Format: Evaluation Assessment / Evaluation Form

Statistical PERT® (SPERT®) is a freely licensed, probabilistic, estimation technique. Use Statistical PERT to estimate uncertainties that have bell-shaped risk properties, like: task duration, work effort, revenue, expenses, agile story points, project portfolios, event attendance and more. Use in conjunction with the article Getting Beta with Statistical PERT.

Statistical PERT® Beta Edition uses Excel's two beta distribution functions, BETA.DIST and BETA.INV to model uncertainty.  To easily model mild-to-moderately skewed uncertainties, try Statistical PERT® Normal Edition, which uses Excel's two normal distribution functions NORMAL.DIST and NORMAL.INV.

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