2024-03-11 22:33:15
The EF English Proficiency Index (EF EPI) is subject to self-selection bias. [Link] NEEDS_MORE_RATINGS(20-1-9) Author
2024-03-12 10:50:25
The alleged methodological liabilities of the index should be discussed in the comments section. The existence of a sampling bias does not undermine the fact that this index is a founded way of measuring the mastery of english language. NEEDS_MORE_RATINGS(4-0-1) Author