RE: Earned Value terminology (was RE: Managing Extreme Programming)

Laurent,

BCWP is the cost needed to "book" the value. The value needs to be
assigned upfront and the BCWS.

The velocity (and I'm speaking as a non-expert here and on behave of one
of my staff who is) is the Level of Effort cost of delivering code for
the iteration and is "equivalent" to BCWP as you mention. 

I'll send the "EV in 1 Page" to anyone who wants, since I assume
attachments aren't allowed.

Here's a quick summary:
Three dimensions of Earned Value

The Plan - Budgeted Cost of Work Scheduled (BCWS)

The Performance - Budgeted Cost of Work Performed (BCWP)

The costs of Performance - Actual Cost of Work Performed (ACWP)

BCWS
 * Authorized work - scheduled tasks
 * Time frame for the work
 * Sum of planned values - baseline plan

BCWP - "How much of the planned work was accomplished?"

ACWP - the money spent to convert BCWS into BCWP.

Cost Variance = BCWP - ACWP (negative CV is "bad")

Schedule Variance = BCWP - BCWS (negative SV is "bad")

Glen B. Alleman 

> -----Original Message-----
> From: Laurent Bossavit [mailto:[email protected]]
> Sent: Friday, January 10, 2003 12:27 PM
> To: [email protected]
> Subject: Earned Value terminology (was RE: [xpAdoption] Managing
Extreme
> Programming)
> 
> > > > (3) How to map the "velocity" metrics in unit-less measures
> > > > to Earned Value in dollarized measures.
> > >
> > > Hmmm...  Velocity has to do with work expended, not value created.
> >
> > [>] Yep and that the "gap" for XP, since velocity describes a "level
of
> > effort" (in terms of EV) in which effort expended is the same as
> > "value."
> 
> From what I understand, the mapping is rather simple - if you expand
> the acronym BCWP as "budgeted cost of work performed" you get almost
> the word-for-word definition of velocity, i.e. the total effort that
> a given feature had been estimated to require.
> 
> In XP "effort" maps directly to "time" (a 1-point story maps to N
> days' work) which maps directly to "cost" if you assume constant
> salary, which is roughly the case.
> 
> What's the difference between velocity and BCWP per iteration ? Is it
> that the acronym has a meaning different from the expansion above?
> 
> Cheers, 


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