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Űϵһָ
ʲ=/ƽ
ָķӷĸͬrƽʲ:
ʲ=×ƽʲ/ƽ×ƽʲ
=/ƽʲ×ƽʲ/ƽ?BR>=ʲ×
ʲ=/ƽʲ
ָķӷĸͬrII?
ʲ=/ƽʲ
=×II?ƽʲ×II?BR>=/II뾻×II?ƽʲ
=II×ʲD
ŰϵĺĹʽ:
ʲ=II×ʲD×
ӹʽ\ʲʸߵ͵:IIʣӯʲDʺ༈֮󣬿@Ѿʲһۺָ귢仯ԭ廯ֻһۺ֗U⡣
ĺ?
Ӽ㹫ʽԿծԽߣœԽߣȨؓͬ?BR>P530 12-25 Űϵ
ݱ12-2ͱ12-3sǰеļRABC˾2003oľʲʽз
ʲ=II×ʲD×
2002ָ:13.33×0.92×1.41=17.29 (1)
һ:12.60×0.92×1.41=16.34 (2)
(2)-(1)=16.34-17.29=-0.95IIӰ
Ԝ:12.60×0.93×1.41=16.52 (3)
(3)-(2)=16.52-16.34=0.18ʲDӰ
:12.60×0.93×1.38=16.17 (4)
(4)-(3)=16.17-16.52=-0.35Ӱ
ָ֮Ĺϵ:
1.ʲһۺIJʣǶŰϵĺġ
ָĸߵȡIIʣʲD
2.IIʷӳIIIĹϵ
3.ʲDʽʾIʲܶIIۺ
4.ӳʲĹϵԽfI̶Խ]ܸIϴIJܸͬʎŲ^İV?BR>12-4֪ij˾2001Ʊй: 2002ݏ?BR>?Ԫ
ʲĿ
ĩ
ʲ
8000
10000
4500
6000
3500
4000
Ŀ
II?/DIV>
ԣ
20000
ԣ
500
Ҫ:1Űϵеָݏָ漰ʲĿ~ģƽ?
پʲʣ
:ʲ=500÷[(3500+4000)÷2]×100% =13.33%
ʲʣλС
:ʲʣλС=500÷[(8000+10000)÷2]×100%=5.556%
IIʣ
:II=500÷20000×100% =2.5%
ʲDʣλС
:ʲDʣλС= 20000[(8000+10000)÷2] =2.222Σ

:=1÷{1-[(6000+4500)÷2]÷[(10000+8000)÷2]} =2.4
=[(10000+8000)÷2]÷[(4000+3500)÷2]=2.4