中国重型卡车产业分析

Analysis of Chinese heavy truck industry

针对中国重型卡车市场的不断变化，基于2004-2007年和2008年第一季度重型卡车的市场数据，采用最小二乘法建立线性回归方程，并对2009年的重型卡车市场进行了预测。预测结果表明：2009年重型卡车市场的销售量将达到50万辆，销售量的置信区间为45万辆至56万辆。

According to the change law of Chinese heavy truck market, based on the data of heavy truck market from 2004 to 2007 and the first quarter of 2008, this paper forecasts the market in 2009 using the method of least-square-method, and establishes the linear regression equation. The results show that in 2009 the sales of the heavy trucks will be 500 thousands, the confidence interval be from 450 thousands to 560 thousands. 3 tabs, 2 figs, 3 refs.