estimation

Effort and Time Estimation

• Best practices
  • Avoid anchoring bias
• Time/Effort Estimation
• Relative Estimation
  • T-shirt size, picking a medium size item first
  • Story points, pick a starting one, and assign points based on Fibonacci numbers
• Agile Effort Estimation
  • Planning Poker, uses Fibonacci cards
  • Dot Voting, with color coded dot stickers
  • The Bucket System
  • Large/Uncertain/Small
  • Ordering Method
  • Affinity Mapping
• Three-point time estimating: optimistic, most-likely, and pessimistic
  • Triangular Distribution: $E=(o+m+p)/3$
  • Beta (PERT) Distribution: $E=(o+4m+p)/6$