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## 52836Re: [scrumdevelopment] Re: Story point estimating - ideal time vs relative scale

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• Oct 12 3:59 AM
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Anything beyond 5, or possibly 8, in the faux-Fibonacci series is a WAG dressed up with precision.  When given the choice between precision and accuracy, I'll take accuracy, thanks.

Dave Rooney | Agile Coach and Co-founder
Westboro Systems - Agile Coaching, Training, Organizational Transformation.

On 2011-10-11, at 11:02 PM, JackM wrote:

As you get larger you need bigger margin for error. You can discern between 1 & 2 less so between a 40 and 41 pointer so that's why fibonnaci works well

Jack
Www.agilebuddy.com

--- In scrumdevelopment@yahoogroups.com, RonJeffries <ronjeffries@...> wrote:
>
> Hi Jack,
>
> On Oct 11, 2011, at 10:43 PM, JackM wrote:
>
> > Typically you estimate size in story points. Each story is weighted against the other stories in the backlog. So if your first story is a 2. Then the next story which is twice the size of that one let's say then you'd give that one a 5. Remember there is no 4 as you should use the modified fibonaci sequence 1,2,3,5,8,13,20,40,100. You can also ad 0, 0.5 if u wish.
>
>
> Then why not add 4 for X sake?
>
> Is it not obvious that this is the rankest numerology?
>
> Ron Jeffries
> www.XProgramming.com
> If another does not intend offense, it is wrong for me to seek it;
> if another does indeed intend offense, it is foolish for me to permit it.
> -- Kelly Easterley
>

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