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• 한국·중국·일본·미국 등의 2026 세계 '평균IQ·지능지수' 순위 (mean IQ: 100; standard deviation: 15).Year-to-year stability: In 84.8% of countries, the average score Countries with fewer than 100 test-takers were excluded from the ranking due to limited sample size and blog.naver.com · 2026.03.11