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Why You Should Use Ranged Estimation for Your Projects

LiquidPlanner

I my first 15 years, I used single-point estimation to build project schedules. The next ten years I used ranged estimations with traditional Gantt chart project scheduling software tools – this was better but cumbersome. Ranged estimation has been around since the introduction of PERT and the three-point estimation method.

Estimate 156
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Tuesday Tip #2: Manage Uncertainty Using Ranged Estimates

LiquidPlanner

The traditional method for estimating project work using single-point (or fixed) estimates has a few drawbacks: It’s hard to provide a single accurate estimate, especially for something new. People tend to provide estimates that are too optimistic because they don’t want to let you down. Tired of it?

Estimate 147
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Strategic Project Portfolio Management [Book Review]

Rebel’s Guide to PM

Estimating for success Maybe best of all, Moore talks about range-based estimates – a topic I’m very interested in. Moore explains that estimates are biased towards the initial values because people don’t adjust their estimates again after making that initial decision.

PMO 414
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What is ROM and how to calculate it (with example)

Rebel’s Guide to PM

What is a ROM estimate? A rough order of magnitude estimate is used to give you a very high level view of potential project costs. Ideally, you’d be able to provide a definitive estimate, carefully created from loads of input from subject matter experts and plenty of research on past projects and their budgets.

Estimate 285
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Drive Better Results for Your Professional Services Firm Part 2: Deliver Profitable Projects

Speaker: Patrick Connally and Andy Yeomans

Inaccurate or unrealistic project estimates, ineffective resource management, and lack of visibility into project burn rates and progress can all negatively impact the overall performance and profitability of a project. Many factors can impact the ultimate profitability of professional services projects.

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Rough Order of Magnitude (ROM): Understanding ROM Estimates

ProjectManager.com

Rough order of magnitude (ROM) can help you better estimate project costs. But what is ROM and how can you calculate ROM estimates? We’ll explain the process, define the term and detail the steps for making a rough order of magnitude estimate. As noted, the rough order of magnitude is a technique to estimate project costs.

Estimate 352
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Rough Order of Magnitude (ROM) Estimate and How to Calculate It (with example)

Rebel’s Guide to PM

What is a ROM estimate used for? A rough order of magnitude estimate is used to give you a very high level view of potential project costs. Ideally, you’d be able to provide a definitive estimate, carefully created from loads of input from subject matter experts and plenty of research on past projects and their budgets.

Estimate 459