how can we determine if a project can be completed in desired time using CPI and SPI

Question

CPI = 0.85
SPI = 0.80
desired target = 12 months
At start in the month of January, Budgeted cost = $75,000
                                                    Actual Incurred = $90,000

Answer 1

CPI and SPI will tell you of the issues, but you will need to determine if they are solvable using this information before you can say the project will be completed in the desired time.  You will need to make projections using the current rates, identify alternative courses of action, and conduct a risk assessment to make sure the changes do not introduce additional risk.