<P >烟煤<FONT face="Times New Roman">(COAL)</FONT>的需求量以联邦储备委员会的钢铁生产指数<FONT face="Times New Roman">(FIS)</FONT>、电力生产指数<FONT face="Times New Roman">(FEU)</FONT>、煤炭批发价格指数<FONT face="Times New Roman">(PCOAL)</FONT>,以及天然所批发价格指数<FONT face="Times New Roman">(PGAS)</FONT>的影响。从<FONT face="Times New Roman">1965</FONT>年<FONT face="Times New Roman">1</FONT>月至<FONT face="Times New Roman">1972</FONT>年<FONT face="Times New Roman">12</FONT>月的月度数据,可得到如下回归结果:</P>
<P ><FONT face="Times New Roman">COAL=12262+92.34FIS+118.57FEU-48.90PCOAL+118.91PGAS+e</FONT></P>
<P ><FONT face="Times New Roman"> t (3.51) (6.46) (7.14) (-3.82) (3.18)</FONT></P>
<P ><FONT face="Times New Roman">R<SUP>2</SUP>=<st1:chmetcnv w:st="on" TCSC="0" NumberType="1" Negative="False" HasSpace="True" SourceValue="0.692" UnitName="F">0.692 F</st1:chmetcnv>(4/91)=51.0 DW=0.95</FONT></P>
<P>没有数据,怎样消除自相关,请高手赐教,谢谢!!!</P>


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