NMR = (Deaths under 28 days / Live births) × 1,000. It isolates early infancy mortality, often reflecting quality of obstetric and immediate newborn care.
Assertion (A): Fisher's ideal index satisfies both time reversal and factor reversal tests. Reason (R): Fisher's index is the geometric mean of Laspeyres and Paasche indices. Choose the correct option:
A.Both A and R are true, but R is not the correct explanation of A
B.Both A and R are true, and R is the correct explanation of A
Explanation:
NRR=1.0 means each generation of women exactly replaces itself with daughters surviving to reproduction; with constant fertility/mortality and no migration, population growth ceases in the long run.
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