Geometric mean correctly averages multiplicative processes (e.g., compound growth rates) by taking the nth root of the product, avoiding bias from arithmetic mean in ratio contexts.
Explanation:
ASFR = (Births to women in age group / Women in age group) × 1,000. An ASFR of 120 indicates 120 annual births per 1,000 women aged 25-29, reflecting age-specific fertility intensity.
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