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When is a project ahead of schedule?

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Question added by ZULFIQAR ALI , Planning/ Project Control Manager , King Abdullah University Of Science And Technology
Date Posted: 2017/06/21
Ahmed Mohamed Abdel Kader Al-Assar
by Ahmed Mohamed Abdel Kader Al-Assar , Project Control Engineer , QU

The Correct answer is B. SPI>1

Keith Gregory Wright
by Keith Gregory Wright , Program Director , DynCorp International

CPI and SP are a measure of performance. 1 means it is on budget and less than 1 means it is underperforming per unit of cost or time. My thinking is to be ahead of schedule is that performance is better than 1 therefor B or C. 

Deleted user
by Deleted user

Assuming that B is SPI, both B & C does show that project is ahead of schedule. But C also shows that Cost performance is good.

Vineet Singh
by Vineet Singh , Project Planning Engineer , Larsen & Toubro Ltd.

First, let me explain CPI and SPI

  • Cost Performance Index (CPI): Represents the amount of work being completed on a project for every unit of cost spent. CPI is computed by Earned Value / Actual Cost. A value of above1 means that the project is doing well against the budget.
  • Schedule Performance Index (SPI): Represents how close actual work is being completed compared to the schedule. SPI is computed by Earned Value / Planned Value. A value of above one means that the project is doing well against the schedule.

Thus, the question is when is project ahead of shedule, thus answer is B. SPI >1

But C. SPI & CPI >1 indicates schedule is ahead with good cost.

Binil Paul
by Binil Paul , Sr. Planning Engineer , KEO International Consultants

Option B = SPI > 1

thats when the earned value is more than the planned value..

shaikh aminuddin shaikh
by shaikh aminuddin shaikh , Package Manager , Elseif Engineering & Contracting

Schedule performance index i,e SP is more then 1

.the right answer is.SPI less than 1