The Professional Product Owner book formulas
Here are two formulas from the book
Revisiting the formula that ignored size variance:
50 PBIs (total) / 8 PBIs per Sprint (velocity) 3 2-week Sprints 5 12.5 weeks
When you take into account the size variance of the Product Backlog items by applying points, you end up with a revised end date:
160 points (total) / 19 points per Sprint (velocity) 3 2-week Sprints 5 16.8 weeks
I understand the calculations should be as follows:-
50/8 = 6.25 which would then be multiplied by 2 (2 week sprints) in order to get 12.5 weeks for 50 PBIs.
160/19 = 8.42 which would then be multiplied by 2 (2 week sprints) in order to get 16.84 weeks for 160 points.
Can someone please let me know what the 3 & 5 numbers are supposed to mean, or are they typos?
I have a feeling that 3 should be X and that 5 should be =