Fictional measurement study
Explain the program. Rebuild the result.
Question and decision
What is the mean of each group's usable measurements, in arbitrary units? These are fictional teaching data, not observations supporting a scientific claim. A recorded zero is usable. NA is missing. Invalid status takes precedence over missingness. No usable observations means NA, never an invented zero mean.
Results
| group | n_total | n_used | n_missing | n_rejected | mean |
|---|---|---|---|---|---|
| A | 5 | 3 | 1 | 1 | 10.00 |
| B | 5 | 3 | 1 | 1 | 15.00 |
The n labels count used measurements. A group without usable values has no bar and is explicitly labeled n=0; mean=NA. Exclusion categories do not overlap.
Evidence and handover
ROOT the tools. SHAPE the workflow. The reference and edge cases passed: 17 native checks. Data conservation is checked for every group: n_total = n_used + n_missing + n_rejected. The source revision is c1ccc8f2af94130907df580638cbe4660bed836b; its recorded dirty status is True.
- Read the complete literate source
- Read the original TSV input
- Download the summary TSV
- Inspect the machine-readable provenance
- Reuse input validation
- Reuse the group statistic program
The manifest hashes inputs, source, generated programs and checked scientific results. It does not hash itself or this report: manifest precedes report. Identical scientific tables are tested in this recorded environment. PDF bytes can differ with fonts, tool versions and timestamps; no cross-platform byte identity is claimed. Source, raw TSV and manifest are attached to the PDF.