Estimating

Zen Project Management

I started thinking about how common it is for people to not be able to provide good estimates. It was ironic, but part of the work with my client that week was explaining the technique of relative estimates using t-shirt sizes and story points. The team I was working with was new to agile and used to the old way of doing absolute estimates, which as we all know are not as accurate because of things like student syndrome or Parkinson's Law.

Sustainable Estimating

Green Project Management

The post Sustainable Estimating appeared first on Delivering a better world, one project at a time. The only certainty is that nothing is certain. Pliny the Elder, Roman scholar, 23-79 CE Our culture encodes a strong bias either to neglect or ignore variation. We tend to focus instead on measures of central tendency, and as a result we make some terrible mistakes, often with considerable practical import. Stephen Jay Gould, naturalist, […].

How To Estimate Projects: The Complete Guide To Project Budget & Cost Estimation

The Digital Project Manager

Estimating successfully is all about getting the right amount of funding to enable you to successfully deliver a project. The post How To Estimate Projects: The Complete Guide To Project Budget & Cost Estimation appeared first on The Digital Project Manager. But creating a project budget that works – delivering worthwhile value for a client at a cost that’s still going to make a respectable profit for the agency is a tricky balance, so how do you do it right?

How To Be An Estimating Superhero

Girl's Guide to PM

A statistical model for estimating isn’t normally something I’d put in the ‘make my job easy’ box, but I might just have found one that works. What if you want an estimate that is, say, 75% reliable? PERT can’t give you those kinds of estimates. How reliable is this estimate?”.

Estimating Resources

Herding Cats

There's a never-ending opportunity to learn how to estimate in the presence of uncertainty. When you hear that estimates are a waste (we'd rather be coding), estimates are fiction, we're bad at estimating, and the plethora of other excuses for not learning how to estimate, ask if that person has done the minimal homework to learn how to estimate needed to make decisions in the presence of uncertainty found on all software development projects. .

Reasons to Estimate and Measure

Herding Cats

Estimating Software-Intensive Systems: Project, Products, and Processes , Richard D. Stutzke is a starting point for estimating software projects. I recommend it for anyone starting out in the estimating business all the way to seasoned veterans. Reasons to Estimate and Measure

Estimating Tools and Resources

Herding Cats

Tools and resources for cost and schedule estimating, when you here estimates are hard, we're bad at estimating, estimates are a waste, estimates are misused All those statements are fallacies. iceaaonline.com International Cost Estimating and Analysis Association.

Everyone estimates!

Musings on Project Management

We all make estimates; and we all make estimates all the time. When I make the 20 mile trip each Tuesday to a client site, I estimate adjustments to a baseline based on weather and road construction and if I know about an accident. Really, no one sets out to do anything meaningful without some estimate in mind re time, or cost, or risk; usually we can also notionally estimate the scope. So, agile estimate

No more initial estimates? NOOOOOOOOOOO!

Kiron Bondale

You are assigned to manage a project and before you or your team have had an opportunity to start to chip away at the looming mountain of uncertainty, you get put on the spot to provide a cost or schedule estimate by your project sponsor or some other stakeholder.

How to Talk About Estimates

Herding Cats

What is an estimate? An estimate as a noun is an approximate calculation or judgment of the value, number, quantity, or extent of something. An estimate as a verb is to roughly calculate or judge the value, number, quantity, or extent of. Estimates.

Why Estimates are Needed for Success in the Nondeterministic Universe

Herding Cats

There's a fallacy used by some in the software development business, that estimates are not needed to make decisions in the presence of uncertainty. Here's an example of the probability distribution of a cost estimate for a project. NoEstimates Estimating Mathematics

Decisions Without Estimates?

Herding Cats

Can you make a decision without an estimate? There are NO means of making a credible decision in the presence of uncertainty without estimating the outcome of that decision. Don't assume, Estimate. Be an Adult, estimate the impact of the risk on the probability of success.

Estimating on Agile Projects

Herding Cats

Here's a straightforward approach to estimating on agile projects. This is an example of the estimating profession found on many domains. . NoEstimates Estimating

Estimate everything?

Musings on Project Management

Mike Cohn on estimating (from his email blasts): "Because I've written a book on estimating, people seem to think I estimate everything on my product backlog. I ask a team to estimate a product backlog item only when having the estimate will lead to actionably different behavior. So, for example, I might ask a team for an estimate on a user story so that I can decide if I want. agile estimate

RBS is one more technique for your estimation tool belt!

Kiron Bondale

Project managers need to be comfortable with different estimation techniques. Foundational project management courses will teach you about analogous, bottom-up, parametric and three-point estimating. Estimate the size or effort of that story or work package.

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Cost Estimating Assessment Criteria

Herding Cats

Here are the guidelines for a credible cost estimate (GAO-16-620). Details calculations performed and estimating methodology used. Estimate should lack bias; be neither overly conservative nor optimist. Regular updates cost estimate to reflect significant changes. Estimate based on historical record of comparable p[rograms. Estimating techniques used appropriately. Indpenednet cost estimate to compare different estimating methods.

Why Johnny Can't Estimate?

Herding Cats

Since all risk comes from uncertainty - reducible (Epistemic) and irreducible (Aleatory), estimating is a foundation of all we do. There is no discussion of the conjecture that estimates are a waste, estimates can't be done, estimates are evil, estimates must be stopped immediately. To be informed how to estimate in this broad range of domains, problems, and impacts - education, exp[erience, and skill are needed. Gow to avoid common estimating mistakes.

Principles of Cost and Schedule Estimating

Herding Cats

One of the 4 summary root causes of project performance failures is Unrealistic Cost and Schedule Estimates based on inadequate risk-adjusted growth models. If you have no uncertainty, then estimates provide no value. Herding Cats: Basis of Estimating Software Development.

Challenges with Using PERT for Estimating

Green Project Management

The post Challenges with Using PERT for Estimating appeared first on Delivering a better world, one project at a time. This post was modified from one I developed several years ago for the Mercure AACE 2013 program I took, called W5_PM_PERT-Challenges.

Estimating is a Learned Skill

Herding Cats

Estimating is a learned skill, used for any purpose from every-day life to management of projects. When I left for the airport this morning to catch my flight to a customer site I estimated, given the conditions, how much time I need to get to my favorite parking spot at DIA. The same process for estimating is applied to multi-billion dollar projects we work. Here's some materials that provide the tools and processes needed to learn how to estimate.

Basis of Estimating Software Development

Herding Cats

The estimating of software development is both straightforward and complex. When it is suggested that estimating is hard, of no value, and unnecessary, always ask what principle is used to support that claim? Here are some resources that will provide guidance to produce credible software development estimates, in both traditional and agile domains. Software Sizing and Estimating: Mk II FPA , Charles Symons, John Wiley & Sons, 1991.

Your Guide to Accurately Estimating Projects

LiquidPlanner

Estimation is an invaluable tool for anticipating and managing project uncertainties. Accurate project estimates help identify cost and schedule requirements with relative precision, and reduce the risk of running out of time, resources, and budget during a project. Phased Estimating.

Why We Need Estimates

Herding Cats

The ability to generate reliable cost and schedule estimates is a critical success factor necessary to support business projects. Why Guessing is not Estimating and Estimating is not Guessing. Without this ability, business value is at risk of experiencing cost overruns, missed deadlines, and performance shortfalls—all recurring problems that projects assessments too often reveal.

Quote of the Day - Estimating Software Costs

Herding Cats

In extensive research of over 20,000 software development projects spanning 18 years, it is found that more projects are doomed from poor cost and schedule estimates then they ever are from technical, political, or development team problems.

When to Estimate and When Estimates aren't Needed

Herding Cats

Paul Boos has a post about estimating and makes a case for the Principles of when NOT to estimate. This struck a cord around a bigger topic - the inversion of estimating. When should we NOT estimate? What business decision making conditions could be in place where we don't have to estimate the outcomes of our decision in the presence of uncertainty? Then on to the original conjecture for No Estimates from Paul's post. Not principles for NOT estimating.

Why Johnny Still Cannot Estimate

Herding Cats

He doesn't know how - He doesn't understand how estimates fit into the process of business and managerial finance of product or service development. He doesn't understand why estimates are needed - He doesn't understand the impact on the business for not knowing how long, how much, and what will be produced for the time and money. Coding work is much more fun than making estimates, documenting the requirements, writing tests. Herding Cats: Decisions Without Estimates?

Reality of the Value of Estimating

Herding Cats

Avoid software project horror stories - check the reality value of the estimate first from Harold van Heeringen. NoEstimates Estimating Governance

4 Fallacious Reasons to Estimate and Why Those Are Fallacious

Herding Cats

There's a recent post titled Four Fallacious Reasons to Estimate. It lists the usual suspects for why those spending the money think they don't have to estimate how much they plan to spend when they'll be done producing the value they've been assigned to produce for that expenditure.

Three Point Estimate Formulas

PM by PM

Quick Reference on Three Point Estimate I have written a series of articles on Three Point Estimate and related concepts. I have explained the basic concept of Three Point Estimate in my first article. The post Three Point Estimate Formulas appeared first on PM-by-PM.

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Estimating Accuracy Mathematics

Herding Cats

In the estimating business, like many things in project management, there is confusion about principles, practices, and processes. A good estimation approach should provide estimates that are within 25% of the actual results, 75% of the time. Want To Learn How To Estimate?

Agile Estimating Methods and Impact on Project Development Performance Index

Herding Cats

The presentation " Quantifying the Impact of Agile Practices ," Larry MacCherone at the RallyOn 2013 Conference, presents some results on estimating impacts. Teams doing Full Scrum have 250% better Quality than teams doing No Estimating. How to Estimate Software Development.

Quick Summary of Estimating Advice

Herding Cats

We can't estimate things we've never done before - this is simply not true. If you truley haven't done the work before, you're probabiliy not the right person to be estimating for those wanting to pay you. . Estimates are guesses, because we don't know that the future is - this is a fundamental misunderstanding (either with intent or omission) on how estimates are made. We've never done this before, so how can we possibly estimate how long it will take?

3 Tips for creating Accurate Project Estimates

Hydra

Despite the complexities involved, it’s essential to do the very best with your project estimates. Here are our 3 tips for creating accurate project estimates. Industry

Planning Poker – build accurate estimates for sprints on agile projects

The Digital Project Manager

Planning Poker is a great freemium agile estimation digital card game that enables a collaborative approach for consensus-driven estimating to guide sprint planning. The post Planning Poker – build accurate estimates for sprints on agile projects appeared first on The Digital Project Manager. Play around. General Tools

Just a Reminder About Estimating Software Projects

Herding Cats

Here's a clear and concise discussion of the estimating topic. And just a reminder for making decisions in the presence of uncertainty. NoEstimates

Your Guide to Accurate Project Estimate Projects

LiquidPlanner

Estimation is an invaluable tool for anticipating and managing project uncertainties. Accurate project estimates help identify cost and schedule requirements with relative precision, and reduce the risk of running out of time, resources, and budget during a project. Phased Estimating.

Governance and Estimating

Herding Cats

make use of estimates in their decision support processes. To suggest Not Estimating can be the basis of those decision making process is to willfully ignore these principles.

Estimating the Risk

Herding Cats

In order to make risk-informed decisions, we must estimate the outcomes and the impacts of those outcomes on future activities (cost, schedule, and technical performance of products and services). Without these estimates, there is no risk management. Without these estimates, there can be no risk management. Be an adult, make estimates of the future outcomes of your risk informed decisions. . [1] Risk is everywhere on projects.

Why Ranged Estimates Are More Effective Than Single Point Estimates

LiquidPlanner

This is why making ranged estimates for your projects is more realistic and reliable than aiming for a singular deadline. We use ranged estimates all the time in daily life. The advantage of making ranged estimates. Ranged vs single-point estimates.

The brief moment when you think you’ve just produced a perfect estimate

The Digital Project Manager

The post The brief moment when you think you’ve just produced a perfect estimate appeared first on The Digital Project Manager. The PM life