Also, EAC for time of project could be calculated by
using SPI. In the equation 5 if it were used CPI×SPI
instead of CPI, the worst estimation of EAC would be
resulted. It could be employed a combination of SPI
and CPI like A×SPI+B×CPI for EAC estimation
where A and B are constant value. It is obvious that
the results would be changed in each case. Moreover,
it is tried to find a proper function to forecast the time
and cost of a project using simulation method. In