Which scale is typically used for Planning Poker?

Choose one or more of the following:

• less than 1 hour, 1 to 4 hours, 4 to 8 hours, 8 to 24 hours, more than 24 hours
• 2, 4, 6, 8, 10
• XS, S, M, L, XL
• 1, 2, 3, 4, 5, 8, 13, 20

Why this is the correct answer

Answer D, "1, 2, 3, 5, 8, 13, 20," is correct because it follows the modified Fibonacci sequence, commonly used in Planning Poker for estimating the size of user stories in agile development.

This scale helps to reflect the increasing uncertainty associated with larger tasks and avoids the false precision of linear estimates, making it suitable for the consensus-based approach required in agile estimation processes. The gaps between the numbers grow as the estimates get larger, which encourages more accurate reflection on the complexity and effort required for bigger tasks.