Whirlwind Bike Earned Value Question

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This topic contains 4 replies, has 3 voices, and was last updated by  Paul Naybour 3 weeks ago.

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  • #15040

    Paul Naybour
    Moderator

    Whirlwind Bike Earned Value Question         
    Planned cost (BCWS) week 6  194,000 Planned Duration  12 periods
    Work Package Dur BAC %complete EV Actual Cost
    Start-up and mobilisation 1            5,000 100%         5,000                  5,000
    Design frame 2          60,000 95%      57,000               57,000
    Design wheels 1          10,000 100%      10,000               12,000
    Design the ancillaries 1          10,000 100%      10,000               15,000
    Build the frame 4          60,000 0%                –    
    Build the wheels 2          20,000 70%      14,000               14,000
    Build the ancillaries 1          20,000 90%      18,000               17,000
    Integrate the bike 2          40,000 0%                –    
    Test the bike 2          20,000 0%                –    
    Launch the bike 1            5,000 0%                –    
    Project Management  12          48,000 50%      24,000               22,000
    Total         298,000      138,000             142,000
               
    CPI = EV / AC 0.97        
    SPI = EV / PC                 0.71        
    SV= EV – PC –          56,000        
    CV = EV – AC –            4,000        
               
    Actual completion = planned duration / SPI               16.87        
               
    EAC = BAC/ CPI          306,638        
    #15042

    Adelle Hopper
    Participant

    Hi – I’m a bit stuck and wonder if anyone can help please.

    If the BAC is 298,000 and the CPI is 0.97, shouldn’t that give a EAC of 307,261? Not 306,638

    #15041

    Paul Naybour
    Moderator

    Adelle Well spotted I think its a rounding error on CPI. CPI is 0.971830985915493 so EAC is 306.6376811594203….excel……

    #44039

    epicday
    Participant

    Hi Paul,

    Fully understand how you arrived at your cals but the question then asks to draw the cost curves for EV and AC, How do you do this?

    Many thanks

    #44398

    Paul Naybour
    Moderator

    @epicday all you can do is plot the three points you have calculated and join with straght lines. So you have zero for all three at the start, AP and EV at week 6 and then the EAC and forcast actual completion.

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