逐步回归分析的fortran程序，（I为变换次数，矩阵为R(I)，Q为剩余平方和，SD为剩余标准差，F为显著性检验值，R为复相关系数，B为回归系数）-Stepwise regression analysis fortran program, (I was converted number matrix R (I), Q is the residual sum of squares, SD for the residual standard deviation, F is significant