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New Post 11/15/2011 3:35 AM
User is offline AnshulDutt
6 posts
10th Level Poster


Story points to Function points/ person days conversion 

Hello,

Do we have any kind of conversion factor or multiplication factor that can convert user story points into some business recognizable unit such function points(IFPUG/Cosmic function points) or person days. I have aleady read an earlier post that talks about various factors such as complexity, implementaion language, skillset of workers etc. that might affect this relative coversion. However, I am particularly interested in knowing if there is a rule of thumb for such conversion?

Thanks,

Anshul

 
New Post 11/15/2011 6:13 AM
User is offline Tony Markos
493 posts
5th Level Poster


Re: Story points to Function points/ person days conversion 

Hi:

The key is to have all of your stories be right size (relatively small - flow chart out on about a piece of paper) and equal size.   You would then estimate for one story and then multiply this out by the total number of stories.  Problem:  Story techniques lack a mechanism to guide the BA through a partitioning which would result in such a "chunking".

Tony

 
New Post 11/15/2011 10:41 PM
User is offline AnshulDutt
6 posts
10th Level Poster


Re: Story points to Function points/ person days conversion 

Tony,

Thanks for your explanation, it makes a lot of sense. However, how will we consider complexity( development, implementation) while writing user stories? There could be a scenario where a user story is really short but  tricky( read: really complex) from implementation point of view. I believe in such scenarios common estimation will not be useful.

Also, if you something else to share about estimating Agile projects, I would love to know about it.

Thanks,

Anshul

 

 
New Post 11/16/2011 6:26 AM
User is offline Tony Markos
493 posts
5th Level Poster


Re: Story points to Function points/ person days conversion 

Anshul:

To handlle complexity you need a different mindset.  You need to focus more on the interrelationship between stories than is typically done.    You can view user stories as data flow diagrams without the data flows.   

Tony

 

 

 
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