Good math,but ....,the life span is from birthday to last day fo

来源: jinjing 于 2012-11-17 11:55:41 [] [旧帖] [给我悄悄话] 阅读数 : (152 bytes)
回答: 回复：Chinese Male/Female Inbalance Problem 由 灰衣人 于 2012-11-17 10:04:54

So,...total ratio= 77.11/(72.82*1.13)=0.937.not 1. from the table,we know male babies are more and easier exist till 15,later men are easier die.

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