The SAS System                                1
                                               11:14 Thursday, September 6, 2001

                Plot of Y*X.  Legend: A = 1 obs, B = 2 obs, etc.

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  7 +
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    |                                                              A         A
    |                                                    A
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  6 +
    |                                          A
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I   |                                A
n   |
c 5 +
r   |
e   |
a   |
s   |
e   |
  4 +                      A
i   |
n   |
    |
R   |
i   |
d 3 +
e   |
r   |
s   |
h   |
i   |            A
p 2 +
    |
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  1 +
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    |  A
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  0 +
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    ---+---------+---------+---------+---------+---------+---------+---------+--
      80        100       120       140       160       180       200       220

                                  Maps Distributed

                                                                                
                                 The SAS System                                2
                                               11:14 Thursday, September 6, 2001

Model: MODEL1  
Dependent Variable: Y          Increase in Ridership                   

                              Analysis of Variance

                                 Sum of         Mean
        Source          DF      Squares       Square      F Value       Prob>F

        Model            1     31.76371     31.76371       42.039       0.0006
        Error            6      4.53348      0.75558
        C Total          7     36.29719

            Root MSE       0.86924     R-square       0.8751
            Dep Mean       4.70625     Adj R-sq       0.8543
            C.V.          18.46993

                              Parameter Estimates

                       Parameter      Standard    T for H0:               
      Variable  DF      Estimate         Error   Parameter=0    Prob > |T|

      INTERCEP   1     -1.816071    1.05184862        -1.727        0.1350
      X          1      0.043482    0.00670634         6.484        0.0006

                    Variable
      Variable  DF     Label

      INTERCEP   1  Intercept                               
      X          1  Maps Distributed                        

                                 The SAS System                                3
                                               11:14 Thursday, September 6, 2001

              Plot of RESID*X.  Legend: A = 1 obs, B = 2 obs, etc.

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   1.25 +
        |
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   1.00 +                              A
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   0.75 +
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        |                    A                   A
        |                                                  A
   0.50 +
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R  0.25 +
e       |
s       |
i       |
d  0.00 +
u       |
a       |
l       |
  -0.25 +                                                            A
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        |          A
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  -0.50 +
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  -0.75 +
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  -1.00 +
        |A                                                                     A
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  -1.25 +
        |
        -+---------+---------+---------+---------+---------+---------+---------+
        80        100       120       140       160       180       200      220

                                    Maps Distributed

                                                                                
                                 The SAS System                                4
                                               11:14 Thursday, September 6, 2001

            Plot of RESID*PRED.  Legend: A = 1 obs, B = 2 obs, etc.

        |
        |
   1.25 +
        |
        |
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   1.00 +                              A
        |
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   0.75 +
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        |                    A                   A
        |                                                  A
   0.50 +
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R  0.25 +
e       |
s       |
i       |
d  0.00 +
u       |
a       |
l       |
  -0.25 +                                                            A
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        |          A
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  -0.50 +
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  -0.75 +
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  -1.00 +
        |A                                                                     A
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  -1.25 +
        |
        -+---------+---------+---------+---------+---------+---------+---------+
      1.6625    2.5321    3.4018    4.2714    5.1411    6.0107    6.8804  7.7500

                                  Predicted Value of Y

                                                                                
                                 The SAS System                                5
                                               11:14 Thursday, September 6, 2001

Model: MODEL1  
Dependent Variable: Y          Increase in Ridership                   

                              Analysis of Variance

                                 Sum of         Mean
        Source          DF      Squares       Square      F Value       Prob>F

        Model            2     36.11908     18.05954      506.977       0.0001
        Error            5      0.17811      0.03562
        C Total          7     36.29719

            Root MSE       0.18874     R-square       0.9951
            Dep Mean       4.70625     Adj R-sq       0.9931
            C.V.           4.01037

                              Parameter Estimates

                       Parameter      Standard    T for H0:               
      Variable  DF      Estimate         Error   Parameter=0    Prob > |T|

      INTERCEP   1    -10.027679    0.77695951       -12.906        0.0001
      X          1      0.164241    0.01101774        14.907        0.0001
      XSQ        1     -0.000403    0.00003640       -11.057        0.0001

                    Variable
      Variable  DF     Label

      INTERCEP   1  Intercept                               
      X          1  Maps Distributed                        
      XSQ        1                                          

                                 The SAS System                                6
                                               11:14 Thursday, September 6, 2001

              Plot of RESID*X.  Legend: A = 1 obs, B = 2 obs, etc.

        |
        |
   0.25 +
        |
        |                              A
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   0.20 +
        |
        |
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   0.15 +
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        |                    A
   0.10 +
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        |                                                                      A
        |A                                                 A
R  0.05 +
e       |
s       |
i       |
d  0.00 +
u       |
a       |
l       |
  -0.05 +
        |
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  -0.10 +
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        |                                                            A
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  -0.15 +
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  -0.20 +                                        A
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        |          A
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  -0.25 +
        |
        -+---------+---------+---------+---------+---------+---------+---------+
        80        100       120       140       160       180       200      220

                                    Maps Distributed

                                                                                
                                 The SAS System                                7
                                               11:14 Thursday, September 6, 2001

            Plot of RESID*PRED.  Legend: A = 1 obs, B = 2 obs, etc.

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   0.25 +
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        |                                                   A
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   0.20 +
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   0.15 +
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        |                                       A
   0.10 +
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        |                                                                  A
        |     A                                                           A
R  0.05 +
e       |
s       |
i       |
d  0.00 +
u       |
a       |
l       |
  -0.05 +
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  -0.10 +
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        |                                                                   A
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  -0.15 +
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  -0.20 +                                                           A
        |
        |                        A
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  -0.25 +
        |
        -+---------+---------+---------+---------+---------+---------+---------+
         0         1         2         3         4         5         6         7

                                  Predicted Value of Y