## what would be the SPI?

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seema.sonkiya
Expert
Posts: 1810
Joined: Fri Jul 11, 2014 11:57 am

### what would be the SPI?

Got following question:
Rohan is a project manager and has 4 planned activities in his mega project. Activity A is 100% done, B is around 80% complete and C & D are yet to start. Activities A, B, C & D have duration of 7, 3, 5, 5 respectively. The value of each day of work is \$100. Using the 0-100 rule and the activity progress, what would be the SPI?

Options:

A: - 0.33
B: 0.55
C: 0.47
D: 1.0

Explanation:

Planned value of work, PV = 7*100 (for A) + 3*100 (for B) + 5*100 (for C) + 5*100 (for D) = 700 + 300 + 500 + 500 = 2000
Earned value of work done, EV = 700 *100% (for A) + 300*80/100 (for B) + 0 (for C) + 0 (for D) = 700 + 240 = 940
SPI = EV / PV = 940/2000 = 0.47

this creates confusion . Why 80% has taken in 0-100% rule! only100% to be taken.

The answer should be 700/2000 =.35 which is absent.
manishpn
Expert
Posts: 2369
Joined: Sat Jan 04, 2014 3:55 pm

### Re: what would be the SPI?

i agree not right solution if it 0 - 100 rule then only 100% completer activity are counted
Br,
Manish P
PMP, PMI - ACP, SAFe Agilist
http://www.izenbridge.com/blog/7-effect ... ification/

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