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虚拟变量线性回归源程序代码.doc

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虚拟变量线性回归源程序代码

源代码 显示原始数据: Private Sub Command1_Click() Open C:\x.txt For Input As #1 Open c:\y.txt For Input As #2 Dim X(1 To 22), Y(1 To 22), X1!, Y1!, a1% Do While Not EOF(1) Input #1, X1 a1 = a1 + 1 X(a1) = X1 Loop a1 = 0 Do While Not EOF(2) Input #2, Y1 a1 = a1 + 1 Y(a1) = Y1 Loop Close #1 Close #2 Print Print Spc(35); 1994年1月至1999年2月社会消费品零售总额(Y:亿元) Print ------------------------------------------------------------------------------------------------------------------------ Print Spc(5); X:; For i = 1 To 11 Print Spc(2); X(i); Next i Print Print Spc(5); X:; For i = 12 To 22 Print Spc(1); X(i); Next i Print Print ------------------------------------------------------------------------------------------------------------------------ Print Spc(5); Y:; For i = 1 To 11 Print Spc(1); Y(i); Next i Print Print Spc(5); Y:; For i = 12 To 22 Print Spc(1); Y(i); Next i Print Print ------------------------------------------------------------------------------------------------------------------------ End Sub 绘制时序图程序: Private Sub Command1_Click() Open C:\x.txt For Input As #1 Open c:\y.txt For Input As #2 Dim X(1 To 22), Y(1 To 22), X1!, Y1!, a1% Do While Not EOF(1) Input #1, X1 a1 = a1 + 1 X(a1) = X1 Loop a1 = 0 Do While Not EOF(2) Input #2, Y1 a1 = a1 + 1 Y(a1) = Y1 Loop Close #1 Close #2 Dim i% Form3.Scale (1, 9500)-(30, 3000) DrawWidth = 7 Line (3, 3300)-(30, 3300): Line (3, 3000)-(3, 9200) CurrentX = 25: CurrentY = 3800: Print X CurrentX = 4: CurrentY = 9000: Print Y For i = 1 To 21 Form3.Line ((i + 3), Y(i))-((i + 4), Y(i + 1)), vbBlue Next i End Sub 线性回归结果程序: Private Sub Command1_Click() Open C:\x.txt For Input As #1 Open c:\y.txt For Input As #2 Dim X(1 To 22), Y(1 To 22), X1!, Y1!, a1% Do While Not EOF(1) Input #1, X1 a1 = a1 + 1 X(a1) = X1 Loop a1 = 0 Do While Not EOF(2) Input #2, Y1 a1 = a1 + 1 Y(a1) = Y1 Loop Close #1 Close #2 Dim a, b, sumX, sumY, sumXY, sumx2, avrX, avry As Double For i = 1 To 22

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