An estimation method of iteration periods in XP project
一种XP项目迭代周期估计方法

The development period of a Extreme Programming(XP) project depends on the productivity of development team.The productivity can be described by probability of which all user stories are achieved successfully in each iteration phase.In this paper,we presented a simple,but realistic mathematic method to estimate the productivity and iteration periods of XP project.The approach can be useful in estimation of development cost and effort.The approach was verified valid with a set of simulation data.