包括基于矩阵运算计算回归系数并添加趋势线，基于多项式拟合计算回归系数并添加趋势线，借助回归分析程序包计算回归系数并估计检验统计量，及预测和各统计量。(Including the regression coefficient and add the trend line calculation based on matrix computation, polynomial fitting to calculate the regression coefficient and add the trend line based on using regression analysis package to calculate the regression coefficient and the estimation of test statistics, and statistics and forecast.)