ְм

ʲ	ĩ	ծȨ	ĩ
ʽ Ӧ˿ ̶ʲֵ ʲ	1000 3000 6000 7000 1000	Ӧ˿ ӦƱ ڽ ʵʱ	1000 2000 9000 4000 2000
ʲܼ	18000	ծȨܼ	18000

ù˾2003ƻ30%ΪʵһĿ꣬˾豸һֵ̨148Ԫݷ˾ʲծ۶ͬ˾ʣɰֵƱΪ10%Ϊ10ꡢÿδϢĹ˾ծȯٶù˾2003۾ʺ걣һ£˾ծȯķзÿɺԲƣõҵ˰˰Ϊ33%
Ҫ
12003깫˾ӵӪʽ
2Ԥ2003ҪＯʽ
𰸣
12003깫˾ӵӪʽ
ʲռİٷֱ=10000/20000=50%
ծռİٷֱ=3000/20000=15%
ӵ=20000×30%=6000Ԫ
ӵӪʽ=ӵʲ-ӵծ
=6000×50%-6000×15%=2100Ԫ
2Ԥ2003ҪＯʽ
ӵ=20000×1+30%×12%×1-60%=1248Ԫ
Ｏʽ=148+2100-1248=1000Ԫ
2.ʽϰԤⷨP65
1
2ʽֱ߷̣y=a+bx
ٸߵ͵㷨--ѡҵ͵
ս̲P673-2
Ȼߵ͵ϣ빫ʽay-bx
ص㣺Ƚϼ㣬ȷԲԲ
2ijҵ2004ʲ£
λԪ

ʱ		ֽ	Ӧ˿		̶ʲ	ծ
һ	600	1400	2100	3500	6500	1080
ڶ	500	1200	1900	3100	6500	930
	680	1620	2560	4000	6500	1200
ļ	700	1600	2500	4100	6500	1230
ϡ	2480	5820	9060	14700	6500	4440

ҪҪøߵ͵㷨ʽԤģͣԤ⵱2005Ϊ2700ԪʱҵʽҪ
ע⣺ѡߵ͵͵ҵʽռ
⣺ֽռ
b֣y /x=(1600-1200)/700-500=2
a֣y-bx=1600-2×700=200
Ӧ˿ռ
bӦy /x=(2500-1900)/700-500=3
aӦy-bx=2500-3×700=400
ռ
b棽y /x=(4100-3100)/700-500=5
a棽y-bx=4100-5×700=600
̶ʲռãa=6500
ծռ
by /x=(1230-930)/700-500=1.5
ay-bx=1230-1.5×700=180
ܼ㣺
b2+3+5-1.5=8.5
a200+400+600+6500-180=7520
y=a+b·x=7520+8.5x
2005Ԥƴﵽ2700Ԫʱ
ԤҪʽܶ=7520+8.5x=30470Ԫ
ڻعֱ߷
ʽֱ߷̣y=a+bx
ս̲68ҳģ3-3
عص㣺ȽϿѧȷȸߣǼ㷱ӡ