I am the scrum master, using the following system loosely:
- 0.2 points approx < 1 hour
- 0.5 points approx > 2 hours but < 3 hours
- 1 points approx > 4 hours (half a day)
- 2 points approx > 8 hours (1 day)
- 3 points approx > 16 hours (2 days)
I use the approximations as a guide for how long the task would approximately take. Using this as a guide to work out a weeks worth of work worth is. My sprints are typically 4 days long. So in that case the team the points will add up for the week equivalent approximately.
After tracking my teams progress after 3-4 sprints, I am finding that allocating time against the points is becoming pointless, since the total amount of story points they can complete increases as the weeks go on. Last week it was 6.2 points, this week that figure has increased to 9, typically this varies and I am trying to find the team's average velocity.
Should I measure the teams performance by the average amount of points they can complete in the sprint or attaching time to the points as an approximation.