The term "Pseudo-R²" has been in use for a long time. This article is about McFadden's. See [1] for more.<p>[1]: <a href="https://stats.idre.ucla.edu/other/mult-pkg/faq/general/faq-what-are-pseudo-r-squareds/" rel="nofollow">https://stats.idre.ucla.edu/other/mult-pkg/faq/general/faq-w...</a>