<br />1.进行三项中心化移动平均修匀,结果如表2所示。<br /><span style=\'text-align:center;display:block\'>表2 三项中心化移动平均修匀结果</span><br /><span style=\'text-align:center;display:block\'><img src="http://admintk.100xuexi.com/UpLoadImage/2013-05-07/0f58ddee-cc45-4f4f-be1b-c6b74ed9badc.gif" width="449" height="224" /></span><br />2.设直线趋势方程为:<img src="http://admintk.100xuexi.com/UpLoadImage/2013-05-07/9236df43-20d2-403f-8ba1-07721579531b.jpg" width="71" height="26" />,由表6-9中的数据可得最小二乘法计算表,如表3所示。<br /><span style=\'text-align:center;display:block\'>表3 最小二乘法计算表</span><br /><span style=\'text-align:center;display:block\'><img src="http://admintk.100xuexi.com/UpLoadImage/2013-05-07/ed835639-df6d-495e-a5ed-a76ef5702073.gif" width="356" height="344" /></span><br />由最小二乘法可得:<br /><img src="http://admintk.100xuexi.com/UpLoadImage/2013-05-07/d931d3d1-36b7-4e73-ba18-03fec53c14ea.gif" width="418" height="87" /><br />所以,直线趋势方程为:<br /><img src="http://admintk.100xuexi.com/UpLoadImage/2013-05-07/19103195-ec7a-4085-a7a5-45171d9ef52d.jpg" width="137" height="24" /><br />将t=1,2,…,14分别代入直线趋势方程可得各年的趋势值,如表4所示。<br /><span style=\'text-align:center;display:block\'>表4 各年的趋势值</span><br /><span style=\'text-align:center;display:block\'><img src="http://admintk.100xuexi.com/UpLoadImage/2013-05-07/510dc652-2844-4389-8bc7-a1302cc02368.jpg" width="408" height="173" /></span><br />3.2010年该企业的产品产量为:<br /><img src="http://admintk.100xuexi.com/UpLoadImage/2013-05-07/20e6f329-8f0e-44ad-a8ed-412c19d252a7.jpg" width="236" height="34" />