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:male-technologist:BA Techniques, :foggy:Requirement Analysis & Design…

:crystal_ball:

BA Planning & Monitoring

Technical

Estimation :pound:

Forecast the cost and effort to pursue a course of action
//Methods

 1. :arrow_heading_down: Top-down - examining components at a high level in a hierarchical breakdown
 2. :arrow_heading_up: Bottom-up - lowest-level elements of a hierarchical breakdown
 3. Parametric Estimation - using calibrated parametric model of element attributes being estimated. Use their own history to calibrate any parametric model
 4. :black_joker: Rough Order of Magnitude (ROM) - high-level estimate based on LIMITED info, very wide confidence interval
 5. :surfer: Rolling Wave - repeated estimates throughout an initiative, providing DETAILED estimates for near-term activities. 
 6. :fleur_de_lis: Delphi - combination of EXPERT JUDGEMENT :male-judge: and HISTORY :page_with_curl: 
 7. :cocktail: PERT (Optimistic :heavy_plus_sign: Pessimistic :heavy_plus_sign: (4 :heavy_multiplication_x: Most Likely)) :heavy_division_sign: 6

//Accuracy of the Estimate
Evaluate how close an estimate is to actual value measured later
No more than :heavy_plus_sign:50% to :heavy_minus_sign: 50% accurate