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Download a pdf copy of this help file here |
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Download a pdf copy of this help file here |
Format: VosePERTAlt(low, mode, high, low p, high p, U)
This alternative parameterization of the PERT distribution is useful for modeling expert estimates of some continuous quantity.
The PERTAlt distribution appears in the standard Select Distribution palette. It also appears in the Expert selector window when one selects two percentiles {(low p, low), (high p, high)} and a mode.
ModelRisk has another distribution that can be used with this alternative parametisation: the TriangleAlt. It is a good idea to compare the two distributions together to see which gives the most realistic interpretation of the input parameters.
VosePERTAlt generates values from this distribution or calculates a percentile.
VosePERTAltObject constructs a distribution object for this distribution. Professional and Industrial editions only.
VosePERTAltProb returns the probability density or cumulative distribution function for this distribution. Professional and Industrial editions only.
VosePERTAltProb10 returns the log10 of the probability density or cumulative distribution function. Professional and Industrial editions only.