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Quality Engineering >> Estimation and Planning

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darkage
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Reged: 04/02/05
Posts: 557
Loc: Hong Kong
What is ROM in estimation??
      #400120 - 07/23/07 12:12 PM

There is something about a ROM and estimation. I don't know if it's one & the same thing or different or interdependent.

I googled it and found that ROM may be Range Only Measurement. However, I could not make much sense out of it.

Any guess?


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corkladModerator
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Reged: 11/26/02
Posts: 441
Loc: London, UK
Re: What is ROM in estimation?? [Re: darkage]
      #400445 - 07/24/07 01:25 PM

A ROM is a rough order of magnitude (ROM). A ROM estimate is based on high-level objectives, provides a bird's-eye view of the project deliverables, and has lots of wiggle room. Most ROM estimates, depending on the industry, have a range of variance from 25% all the way to +75%.

--------------------
Life should NOT be a trip to the grave with the intention of arriving safely in an cool and well preserved body, but rather to skid in, chocolate in one hand, beer in the other, body wrecked, totally worn out and screaming WOO HOO what a ride!


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darkage
Advanced Member


Reged: 04/02/05
Posts: 557
Loc: Hong Kong
Re: What is ROM in estimation?? [Re: corklad]
      #400529 - 07/24/07 09:24 PM

Thanks Corklad, that makes sense to me.

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JakeBrake
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Reged: 12/19/00
Posts: 15290
Loc: St. Louis - Year 2025
Re: What is ROM in estimation?? [Re: darkage]
      #400684 - 07/25/07 05:43 AM

In some places it is known as OOM - Original Order of Magnitude.

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venki123
Newbie


Reged: 07/16/07
Posts: 4
Re: What is ROM in estimation?? [Re: corklad]
      #403100 - 08/02/07 02:36 AM

i think ROM is Return On Management.........

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JakeBrake
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Reged: 12/19/00
Posts: 15290
Loc: St. Louis - Year 2025
Re: What is ROM in estimation?? [Re: venki123]
      #403103 - 08/02/07 02:46 AM

Quote:

i think ROM is Return On Management.........


Why?

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NickSimmons
Junior Member


Reged: 08/09/04
Posts: 73
Loc: Montreal, Quebec, Canada
Re: What is ROM in estimation?? [Re: JakeBrake]
      #403266 - 08/02/07 08:12 AM

I've seen people use ROM as an acronym for "Rough Order of Magnitude". It's basically an early estimate that gives a ballpark idea for whatever you are estimating.

That's my best guess.


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gangaputra
Member


Reged: 02/13/07
Posts: 85
Loc: hyderabad
Re: What is ROM in estimation?? *DELETED* [Re: NickSimmons]
      #414802 - 09/10/07 08:28 PM

Post deleted by Administrator

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JakeBrake
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Reged: 12/19/00
Posts: 15290
Loc: St. Louis - Year 2025
Re: What is ROM in estimation?? [Re: gangaputra]
      #414871 - 09/11/07 01:37 AM

Ramesh, please contact your help desk to get the caps lock issue on your PC repaired.

Thank you


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gangaputra
Member


Reged: 02/13/07
Posts: 85
Loc: hyderabad
Re: What is ROM in estimation?? [Re: JakeBrake]
      #415722 - 09/13/07 03:13 AM

Hi
I would like to contribute my knowledge and the practice which we follow in our organisation.

ROM Estimation is just like the normal size estimation the only differenc eis that instead of LOC or KLOC or FP we use KiloBytes to estimate the ROM size for the project.

in our organisation before the start fo the project we estimate the RAM/ROM size required for the project.

and ROM - Read omly Memory and
RAM- Random Access Memory


cheers
Ramesh


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morepm
Newbie


Reged: 08/20/12
Posts: 1
Re: What is ROM in estimation?? [Re: darkage]
      #714881 - 08/20/12 04:20 PM

A ROM is a Rough Order of Magnitude Estimate used during the very beginning of a project. There are specific techniques you can use to improve your ROM estimation. Too much to write here. Take a look at the following page for more information on ROM estimates:

http://morepm.com/2012/08/20/how-to-develop-a-rough-order-of-magnitude-estimate-rom-estimate/


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Joe Strazzere
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Reged: 05/15/00
Posts: 12344
Loc: Massachusetts, USA
Re: What is ROM in estimation?? [Re: morepm]
      #714925 - 08/21/12 05:59 AM

Quote:

There are specific techniques you can use to improve your ROM estimation. Too much to write here.



LOL. 5 years after the original post, but still "too much to write".



--------------------
- Joe
Visit AllThingsQuality.com to learn more about quality, testing, and QA!

I speak only for me. I do not speak for my employer, nor for anyone else.


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