1877统计中等essayshort
Track-Record Age Bias 2
题目
At end-2027, a manager database contains 54 surviving funds launched in 2026, 24 surviving funds launched in 2024, and 10 surviving funds launched in 2022. The survival rates for those vintages were 90%, 60%, and 40%.
How many years does the live-panel average age understate the average age across all original launches?
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