What is T-shirt Sizing?

T-shirt sizing has become a popular method for estimating in agile projects. So, in this video, I answer the question, what is T-shirt Sizing?
T-shirt sizing is a simple and popular way to estimate the relative scales of different pieces of work. The method is usually used in agile projects and applied to User Stories.
We have a video on that: https://youtu.be/ogV2r9579WI
Different users have different sizes, but a common approach might use sizes:
• Extra Small (XS)
• Small (S)
• Medium (M)
• Large (L)
• Extra Large (XL)
• Extra Extra Large (XXL)
Fibonacci numbers for sizing:
• XS – 1
• S – 2
• M – 3
• L – 5
• XL – 8
• XXL – 13
Number of iterations, or sprints, they will need, to develop the functionality:
• XS less than 1
• S 1
• M 2-4
• L 4-8
• L 8+
Process
1. Agree on your sizes and their definitions, and then make your T-shirt size cards
2. Product Owner explains the user story that needs an estimate. The development team asks questions to gain the understanding they need.
3. Each developer gives the user story a t-shirt size.
4. All developers raise their cards simultaneously.
5. The development team discusses the differences and the product owner offers further clarification, if necessary.
6. The team repeats Steps 3-5 until they agree on the size.
Recommended Videos
Carefully curated video recommendations for you:
What is Agile Project Management?
https://youtu.be/D5FoRXGa8ic
What are Epics, User Stories, and Story Points?
https://youtu.be/ogV2r9579WI
How to do a Basic Agile Project
https://youtu.be/6PqmHhJFXp4
Introduction to Agile Scrum Project Management - with Alexis Allen
https://youtu.be/a6vyQEZipno
What is the Agile Triangle - Value, Quality, and Constraints
https://youtu.be/QDExsKePcd0
What is Planning Poker?
https://youtu.be/cm3DbFo5bxY
A while back, I asked Project Managers in a couple of forums what material things you need to have, to do your job as a Project Manager. They responded magnificently. I compiled their answers into a Kit list.
https://kit.co/MikeClayton/what-a-project-manager-needs
Note that the links are affiliated.
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Chapter Markers.
00:00 - What is T-shirt Sizing?
00:11 - Estimating and User Stories
00:38 - Rough estimates
01:04 - Different approaches to T-shirt Sizing
01:28 - The T-shirt sizes
01:44 - More is not better
02:13 - Type-examples
02:41 - Interpreting sizes: Fibonacci numbers
03:23 - Interpreting sizes: Exponential scale
03:41 - Interpreting Sizes: Number of sprints
04:23 - T-shirt Sizing process
06:27 - Why is T-shirt Sizing popular?
#AgileProjectManagement #ProjectManagement #T-shirtSizing