Re: Tasks hours vs story points
- Sure. The velocity can be calculated at the end of every iteration. Generally speaking it typically takes a few iterations to stabilize, but you'll have a value at the end of the first iteration.
--- In firstname.lastname@example.org, shankar moorthy <l_shankar2003@...> wrote:
> So,you mean the velocity can be approximately determined after say,2 sprints??
> Shankar Kris
> 1 847 363 1675
> From: woynam <woyna@...>
> To: email@example.com
> Sent: Wednesday, March 25, 2009 3:23:36 PM
> Subject: [scrumdevelopment] Re: Tasks hours vs story points
> Only if you re-estimate the stories in the backlog, which is genrally a no-no. The value of velocity-based calculations is based on keeping the estimation process consistent across all stories and Sprints.
> So, if the team is getting better (faster) at delivering finished stories, the velocity should go up given that we're comparing apples to apples.
> That said, my experience has been that a team's velocity doesn't really change that much over the course of an extended project unless you're introducing some big-time training in the engineering practices.
> --- In scrumdevelopment@ yahoogroups. com, "ejackson11" <ejackson@ .> wrote:
> > The idea that your velocity can improve over the course of several
> > sprints make sense. However, as the team's velocity increases, so does
> > the amount of work completed per story point. In other words, what
> > seemed difficult and took 10 story points to deliver several months ago,
> > may now by easy and only take 3 story points to deliver.
> > Therefore, your velocity would actually stay constant if measured as
> > story points/time . . . what am i missing here??
> > --- In scrumdevelopment@ yahoogroups. com
> > <mailto:scrumdevelopment@ yahoogroups. com> , Tapio Kulmala
> > <tapiokulmala@ > wrote:
> > >
> > > Hi Mike.
> > >
> > > IMHO, hours can't be used as as velocity metric.
> > >
> > > Story point show quite well how the team is getting better and better.
> > The
> > > velocity of consecutive sprints might be something like 30, 40, 37,
> > 42,
> > > 47.....50, 60. Basically your velocity has doubled. If the previous
> > example
> > > of numbers were days, you'd be tracking something else. If your team's
> > > absolute maximum available working days during a spint were 40, how
> > can they
> > > achieve velocity of 60 days? Their maximum velocity should be 40.
> > Everything
> > > above 40 does not mean that the team is getting better. It only tells
> > us
> > > that their story/task estimates are getting worse or that they have
> > worked a
> > > lot overtime.
> > >
> > > Does this make any sense?
> > >
> > > Tapio
> > >
> > >
> > >
- Hello, Ryan. On Thursday, April 2, 2009, at 8:29:25 AM, you wrote:
> I have seen first hand what happens when execs get ahold of teamYes. The best driver in the world won't get around the track in 1/2
> velocity and get fixated on making that number higher, saying things
> like, "We can make our release with all the features promised if we
> can just get our velocity up to 70 points per iteration". While we
> should all be challenged to do better each sprint, wanting/wishing/
> hoping for a 50% improvement in velocity is unrealistic. Velocity is
> what it is.
the time of the average driver. Whatever level of performance a team
has, they'll likely improve by percentages, not by multiples.
Demanding such changes is almost certainly going to be harmful.
> But my larger point is this: I bet 90% of the agile teams today spendYes. Surely the relative value of stories is at least 10x, and so is
> more time and energy on measuring and managing velocity than
> measuring and managing the value of their work. I would say most
> agile teams I see (and read about) are overly focused on building the
> thing right and under focused on building the right thing. You need
> to do both, but current agile thinking focuses much more attention on
> the former and far too little on the latter, which is a shame.
the cost. So there are things to do that cost 1 and are worth 100,
while others cost 100 and are worth 1. The difference due to choice
You are to act in the light of experience as guided by intelligence.
-- Nero Wolfe