Re: Sprint Burndown doesn't match Sprint Cummulative Flow

Engineering Practices – v2.2 Reports

Sprint Burndown doesn't match Sprint Cummulative Flow

BishopTTU 12-01-2009, 1:17
I'm working with a Team who is getting incorrect reading on the sprint burndown chart. After fixing a few nuances the Cummulative Sprint Burndown is reporting correclty but the Sprint Burndown chart still shows incorrect data.

I've reviewed the posts here and have tried everything I can think of. Here is a sample of what we are seeing.

Evidently, I don't know how to add an attachment. The Sprint Burndown chart shows 740 hours, while the cummulative flow report reports accurately @ 620 hours for the sprint.

http://picasaweb.google.com/lh/photo/UJL_zK1FieVQ26sQIWjN7w?feat=directlink

Any thoughts?

Re: Sprint Burndown doesn't match Sprint Cummulative Flow

Steve Wright 01-13-2010, 10:55

The sprint cumulative flow and sprint burndown report work on different metrics. The cumulative flow will report the last day revisions of estimated effort aggregated of the sprint backlog items. Ideally this shouldn’t change once the sprint backlog task has been created. The burndown report will report last day revisions of work remaining aggregated of the sprint backlog items.

One reason why the report might have different starting point is because at the end of the first day of the sprint some of the sprint backlog tasks work remaining might have been readjusted to be higher than the estimated effort because of some impediments occurring or tasks which were under estimated?

Steve Wright
Technical Consultant
EMC Consulting