Planning and monitoringone of the six knowledge areas of the core guide
  • Couverture de l'eBook Estimation — version français
1 1

19 - Estimation

19 - Estimation

Stop guessing. Estimate.

"It'll cost around 250,000." A round number, delivered with confidence, and already wrong. Most budgets overrun not through bad luck, but because a hope was mistaken for an estimate.

Estimation replaces the magic number with an honest range: you break the work down, set three bounds per item, aggregate into a confidence interval, and refine as you go. You follow the method step by step — through to the final calculation that turns "about 250" into "636, guaranteed between 575 and 697 at 95%".

This guide does not teach you to predict the future. It teaches you to cost your ambition accurately enough to finance it — and to say, at last, how sure you are.
€16,95 EUR
€16,95 EUR
Sale Sold out
Taxes included.
Language

What you get

  • A PDF to read on screen or print
  • The language you pick above, delivered by e-mail within the minute
  • The volume's blank template, ready to reuse
  • Future corrections and additions, at no extra cost
View full details

What's inside

Nine chapters, the same in every volume of the collection. You learn the structure once, then find it again in every book.

  1. Welcome to the collectionWho this book is for · how to read it · why a fictional company
  2. Edelw'ice, a company with a taste for changeStructure, culture, and the challenge of the moment
  3. The problemThe case Edelw'ice has to solve: what it costs, and what nobody dares say
  4. Understanding the methodWhat the technique does, what it does not do, and its golden rule
  5. The turning pointWhat the method changes: the situation before, the situation after
  6. The method, step by stepEvery step, in order, with what it produces
  7. What it changedThe effects that take hold, and what to remember
  8. Key takeawaysThe method in one sentence · when to use it · the steps · strengths and limits
  9. Glossary and resourcesYour blank template · the essential glossary · what comes next in the collection
The full table of contents, exactly as printed in the book. Click to enlarge

The technique, played out on a real case

Edelw'ice makes artisanal ice cream in French-speaking Switzerland. It is a fictional company, and that is deliberate: the same company runs through every volume of the collection, with its teams, its constraints and its disagreements. You meet it again from one book to the next, so you never have to relearn the setting — only the technique. Who is Edelw'ice

This volume's case

"It'll cost around 250,000." A round number, delivered with confidence, and already wrong. The volume breaks the work down item by item, sets three bounds on each, and aggregates into a range you can defend to a bank.

250

le chiffre lancé au feeling

636

la valeur attendue après calcul

575 – 697

la fourchette garantie à 95 %

Frequently asked questions

Do I need to know the BABOK to use it?

No. The volume is written for someone who has to run Monday's session, not to prepare for a certification. The reference guide is cited at the end of each chapter, for those who want it.

How do I receive the file?

By e-mail, within a minute of payment, in the language chosen on this page. The link stays valid: you can download it again later from the same e-mail.

Is the German edition a translation?

No. It is adapted to the Requirements Engineering framework and vocabulary actually used by German-speaking practitioners.

Can I print it, or share it with my team?

Printing for your own use is intended. To equip several people, in several languages, there is a company plan.