Estimation The Easy Way DATA What is it

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Estimation The Easy Way DATA

Estimation The Easy Way DATA

What is it generally? l A re-usable tool l Cutting up the animal l

What is it generally? l A re-usable tool l Cutting up the animal l A calculation l Method of reasoning l Method of communication l Planning activity Steve Farrand

What are your estimation concerns? l Easy to do l Easy to understand l

What are your estimation concerns? l Easy to do l Easy to understand l Easy to communicate l Easy to adjust l Easy to learn l Easy to relate to – good enough accuracy Steve Farrand

Approaching the mountain 1. Fixed target quality, fixed delivery date l How many people?

Approaching the mountain 1. Fixed target quality, fixed delivery date l How many people? 2. Fixed target quality, fixed resources l What is calendar date of delivery? Steve Farrand

Multi-Method l Combine parametised & experience – Factor influences – Fundamental Testing Process (ISTQB)

Multi-Method l Combine parametised & experience – Factor influences – Fundamental Testing Process (ISTQB) l Formal v Exploratory – Cut up by l Function Group l Document l Requirement Steve Farrand Parametric model

Reason it l Check how close the results are – Same order of magnitude

Reason it l Check how close the results are – Same order of magnitude Or – Am I mad! l Reason the lower level estimates Steve Farrand

What to track? l Original estimate l Target – Right Hand Date (PM’s estimate)

What to track? l Original estimate l Target – Right Hand Date (PM’s estimate) l Revised estimate(s) l Actual Make this information re-usable Steve Farrand

Calculations l Keep it simple l Use what you know l Adapt to your

Calculations l Keep it simple l Use what you know l Adapt to your context l Parametise Use the magic of multiplication Steve Farrand

Easy. Est Demonstration l 4 methods line-up l Put into Gantt l Requirements based

Easy. Est Demonstration l 4 methods line-up l Put into Gantt l Requirements based – dream car Steve Farrand

To the PM l. Listening to me is optional l. So is survival! Steve

To the PM l. Listening to me is optional l. So is survival! Steve Farrand

Exercise l Think about things that influence the length and quality of your testing

Exercise l Think about things that influence the length and quality of your testing – Parametised l Think about how you would ensure your information is able to be used in the future estimates – Experienced Steve Farrand

Estimating my project Project Steve Farrand

Estimating my project Project Steve Farrand

About the author l Steve Farrand (Born Kent, England, 1973) l - Software Testing

About the author l Steve Farrand (Born Kent, England, 1973) l - Software Testing Engineer and Trainer (TDS 2003) l - 13 years in IT, 9 years in Formal Software Testing l - Professional Member of the British Computer Society (10039077) l - 30 Certificates to name l - Delivered many training days. Est. 550 l - Vice Chairman of CSSA SIGIST (2007) l - ISEB Certified Practitioner of Software Testing (11853) l - Certified OPST OSSTMM Professional Security Tester - Excellence Award (A 16702) l - SAQA Accredited Outcomes Based Assessor (SOR 145690 SETQAA 095 -274 -521) Steve Farrand

Thank you Steve Farrand

Thank you Steve Farrand