[JSWSERVER-9620] Report - Control Chart could be using more appropriate Mean & Standard Deviation - Create and track feature requests for Atlassian products.

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Type: Suggestion
Resolution: Won't Do
Fix Version/s: None
Component/s: AgileBoard
Labels:
- affects-server
- triaged
Environment:
Standalone

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Repro:

Goto Rapidboard for project (which has at least two Resolved issues).
Open Control Chart (Report tab).

Expected:

A. Chart should show horizontal line using Geometric Mean.
B. Summary footer data should show Geometric Mean & Geometric Standard Deviation.

Actual:

A. Chart shows horizontal line using Arithmetic Mean.
B. Summary footer data shows Mean (Arithmetic) & Standard Deviation (Arithmetic).

Justification:

Cycle/Lead time is reasonably modelled with Lognormal distribution (or others), not likely Normal (as also evidenced by the existing logarithmic scale on the Control Chart's vertical axis).
The Lognormal moments are the Geometric Mean & Geometric Standard Deviation.

is related to

JSWSERVER-9621 Report - Provide chart for Cycle / Lead Time Distribution

Gathering Interest

Form Name

Assignee:: Unassigned

Reporter:: TSO Logic Admin

Votes:: 3 Vote for this issue

Watchers:: 8 Start watching this issue

Created:: 31/Jul/2013 11:27 PM

Updated:: 19/Sep/2019 5:59 AM

Resolved:: 07/Aug/2019 10:15 AM