The SAS System                           1

                           Obs      x     y

                            1     1.00    1
                            2     2.00    3
                            3     3.00    2
                            4     4.00    4
                            5     0.50    .
                            6     2.50    .
                            7     4.25    .

                            The SAS System                           2

                          The REG Procedure
                            Model: MODEL1
                        Dependent Variable: y

        Number of Observations Read                          7
        Number of Observations Used                          4
        Number of Observations with Missing Values           3


                         Analysis of Variance

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

 Model                   1      3.20000      3.20000     3.56  0.2000
 Error                   2      1.80000      0.90000
 Corrected Total         3      5.00000


         Root MSE              0.94868    R-Square     0.6400
         Dependent Mean        2.50000    Adj R-Sq     0.4600
         Coeff Var            37.94733


                         Parameter Estimates

                      Parameter       Standard
 Variable     DF       Estimate          Error    t Value    Pr > |t|

 Intercept     1        0.50000        1.16190       0.43      0.7089
 x             1        0.80000        0.42426       1.89      0.2000

                            The SAS System                           3

                          The REG Procedure
                            Model: MODEL1
                        Dependent Variable: y

                           Output Statistics

            Dependent  Predicted     Std Error
       Obs   Variable      Value  Mean Predict     95% CL Predict

         1     1.0000     1.3000        0.7937    -4.0221     6.6221
         2     3.0000     2.1000        0.5196    -2.5540     6.7540
         3     2.0000     2.9000        0.5196    -1.7540     7.5540
         4     4.0000     3.7000        0.7937    -1.6221     9.0221
         5          .     0.9000        0.9721    -4.9443     6.7443
         6          .     2.5000        0.4743    -2.0637     7.0637
         7          .     3.9000        0.8811    -1.6706     9.4706

                          Output Statistics

                      Std Error   Student                     Cook's
      Obs   Residual   Residual  Residual    -2-1 0 1 2            D

        1    -0.3000      0.520    -0.577  |     *|      |     0.389
        2     0.9000      0.794     1.134  |      |**    |     0.276
        3    -0.9000      0.794    -1.134  |    **|      |     0.276
        4     0.3000      0.520     0.577  |      |*     |     0.389
        5          .          .         .                       .
        6          .          .         .                       .
        7          .          .         .                       .


             Sum of Residuals                           0
             Sum of Squared Residuals             1.80000
             Predicted Residual SS (PRESS)        5.30612