Predictable or forecasting models

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Dear all, I need some information on Predictable Models / Forecasting models of Software Development, Defect Containment & Defect Injection in stages of Software development. What exactly I am looking in Predictable model is :For example if Z amount of work has to be completed in 100 days, Z involves A + B + C etc works  

If A is completed with 50 days, are there any predictable models  available which can concretely say  ____ amount of days required to complete B, C etc., by taking into consideration competency of the  personnel involved, complexity of the work , third party dependencies  etc.,

csqa's picture

Earned value technique can do prediction / forecasting.  You can search for that in google.