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Suggestion
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Resolution: Unresolved
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None
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Standalone
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0
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Provide a distribution / histogram chart for the cycle / lead time data, with bin size control and moment markers.
Acceptance Criteria:
- A. Provide histrogram chart w/ left vertical axis for frequency, and horizontal axis for cycle / lead time value bins.
- B. Show frequencies of data in aggregated bins as vertical bars (all juxtaposed).
- C. Provide control over bin size, with option for "auto" (smart built-in dynamic).
- D. Provide date range slider controls to filter data (just like Control Chart).
- E. Show colour-coded vertical line / marker for Geometric Mean, per a view-control checkbox.
- F. Show a colour-coded vertical line / marker for Geometric Median, per a view-control checkbox.
- G. Show two colour-coded vertical lines / markers for Geometric Standard Deviation above & below Geometric Mean, per a view-control checkbox.
- H. Show Lognormal probability density function (PDF) curve (fitted on same left vertical axis scale), per a view-control checkbox.
- I. Show Lognormal cumulative distribution function (CDF) curve (on new right vertical axis, with 0 to 100% scale), per a view-control checkbox.
- J. In summary footer, show Sample Size ("n"), Geometric Mean, Geometric Median, Geometric Standard Deviation, Min, Max.
- K. In summary footer, show Prediction Confidence Bound, with adjustable confidence level. (E.g., 95% confident that next work item will be complete within 15 days.)
Notes:
- 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.
- relates to
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JSWSERVER-9620 Report - Control Chart could be using more appropriate Mean & Standard Deviation
- Closed
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Wow. This is an old ticket. I wonder if Atlassian has any intention of support essential Kanban at all?