Explanation:
Using a base of 1,000 converts rates to whole numbers (e.g., 120 instead of 0.12), enhancing readability and comparability across age groups and populations without changing the underlying proportion.
Explanation:
Fisher's index = √(120 × 110) = √13200 ≈ 114.89 ≈ 114.9. This geometric mean balances the upward bias of Laspeyres and downward bias of Paasche.
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