Invented summary counts

The plotting exercise compares two invented groups. These aggregate counts were written directly for teaching, not calculated from participant records:

Category, in order	Group A	Group B
Complete measurements	42	64
Missing height only	31	18
Missing weight only	18	12
Missing height and weight	9	6
Total	100	100

The constants live in plotting/plot_summary.py and plotting/plot_summary.R. There are no input data files or participant identifiers. The health-related labels supply familiar context; these numbers are not findings or clinical guidance.

The learner repairs the grouped chart and follows the fictional journal figure specifications, keeping all eight counts and group assignments unchanged. The plotting contract describes program behavior.

For actual results, check what the selected service may receive before sharing a chart, summary, code, or logs. Aggregation alone does not establish that information may be disclosed; see lab data guidance.