Y(估计)=30.59*(17.33+10.53+551+120)+25.09*
(1191.71+150+104.44+30.48+30.48)+17.72*(6.67+10+481.07+426.75+640+62.2)
=21378.13+37813.39+28824.95
=88016.47
1. 自加权设计
(122.37+125.46+106.29)/15*((17.33+10.53+551+120+26.85)+(1191.71+150+104.44+30.48+30.48)+(6.67+10+481.07+426.75+640))
=354.12/15*(725.71+1507.11+1564.49)=23.61*3797.31=89654.49返回搜狐,查看更多
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