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Agile Estimation Techniques Mikalai Alimenkou http://xpinjection.com 16.04.2011
Background Java Technical Lead/Scrum Master at Zoral Labs 6+ years in software development 4+ years of working by Agile methodologies Expert in Agile engineering practices Founder and coachat XP Injection (http://xpinjection.com)
Calculated approximation of a result which is usable even if input data may be incomplete or uncertain The art of guessing what the amount of time will be for a certain activity Guessing the complexity and duration of a task/feature
By definition  estimates are inaccurate
Do we need  estimates  in Agile?
Time waste
No time for good decisions
Fear to miss estimate
But estimates are useful
Better business decisions
Select scope for release or iteration
Healthy discussion
Get team commitment
Build trust Increase responsibility
Spread realistic  complexity vision
Parkinson’s Law Work expands to fill the  time available for doing it
Let’s do it Agile way!
Think differently…
We are really good at comparison
Planning Poker
Why it works?
Be careful of anchoring!
Team Estimation Game
Why Team Estimation Game?
Optimize it!
Don’t try  to estimate  everything
No 100% agreement? Reduce risks!
Classification instead of estimation
Use other scale
Divide work on equal parts
How to estimate better? Learn from your failures Practice, practice, practice! Estimate with other teams Compare your estimates
Apply on personal level Working time management Personal time management
How to avoid estimation?
Highly motivated  and responsible team
Team is interested in product success
Product roadmap is scope based
is based on continuous improvement
Any questions?

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Agile Estimation Techniques