Each entry in the database contains a language and a number of pages. I sorted all the entries by language and took the average number of pages for each of them. But it also display a major weakness, each language don’t have the same number of entries, some have thousands, others less than a hundred. I should have “normalized” the number of entry for each language and exclude languages which don’t have enough entries.

The language hasn’t been defined. I just took the language defined in the metadata of each books without processing them, so the typos and weird stuff are because the website owner or the website it take the books from have different naming convention/made typos (e.g. Japanese, Javanese).

I never used 70% of these apps (14/20) nor do I have an active account on the remaining 6. Im weird.