Which probability distribution is commonly used to model the inherent variability of activity time estimates in project management

Beta distribution

Explanation:

Beta distribution In probability theory

is regarded as a part of continuous probability distributions with a defined interval which could be 0 and 1, and it is characterized with two positive parameters (α and β) which is seen as

as exponents of the random variable .

It should be noted that Beta distribution probability is commonly used to model the inherent variability of activity time estimates in project management

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