# 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|Fibonacci numbers]] - [[agile|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: $E = (o + 4m + p)/6$