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Risk management - Probability density function - simplified

Probability density function - Simplified version

Probability density function Simplified versionProbability density function Simplified version

Let us say that we have activity ‘A’ with the following characteristics.

MINIMUM= £2000
MAXIMUM = £11,000
LIKELY= £5000

We could derive a PDF curve (the actual curve will follow the outline of the columns which we have used to represent specific ranges) as in the diagram. The end values are the MINIMUM and the MAXIMUM values and the LIKELY value is at the peak.

This is nicely (and more simply) represented by the 3 point model for each activity (MINIMUM, MAXIMUM and LIKELY values). However, the shape of the curve can be simplified to straight lines between these 3 points without compromising the data.

This TRIANGULAR PDF will simplify any calculations. See the diagram above.