下表是2005年某地区简略寿命表的一部分根据表中的数据计算①处的值为A.103B.473C.486D.489E.577
下表是2005年某地区简略寿命表的一部分![](https://assets.51tk.com/images/ebab89799c40b995_img/3c1b20995d65778c.gif)
![](https://assets.51tk.com/images/ebab89799c40b995_img/3c1b20995d65778c.gif)
根据表中的数据计算①处的值为
A.103
B.473
C.486
D.489
E.577
A.103
B.473
C.486
D.489
E.577
参考解析
解析:1.①处所代表的是25岁年龄组的人在30岁前死亡的人数,即
d
,而死亡人数
d
=ι
?
q
=ι
-ι
,因此
d
=ι
-ι
=ι[25.fid]-ι
=96043-95554=489,故选项D正确。2.预期寿命e
=T
/ι
,则e
=T
/ι
=4336256/95554=45.4,故选项C正确。
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