Output from fuelreg6.sas	Source 0 Graphs

                        Fuel Consumption across the US                       1

Model: MODEL1
Dependent Variable: FUEL       Fuel consumption (/person)

                             Analysis of Variance

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

       Model            5 424492.95611  84898.59122       21.759       0.0001
       Error           42 163873.52306   3901.75055
       C Total         47 588366.47917

           Root MSE      62.46399     R-square       0.7215
           Dep Mean     576.77083     Adj R-sq       0.6883
           C.V.          10.82995

                             Parameter Estimates

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

     INTERCEP   1    418.985496  175.55875819         2.387        0.0216
     DENSITY    1   -142.916949   56.26214461        -2.540        0.0149
     DRIVERS    1   1087.190144  206.02402130         5.277        0.0001
     TAX        1    -35.100258   12.21923670        -2.873        0.0064
     INC        1     -0.033522    0.02080057        -1.612        0.1145
     ROAD       1     -0.005250    0.00338081        -1.553        0.1280

                   Variable
     Variable  DF     Label

     INTERCEP   1  Intercept
     DENSITY    1  Population density
     DRIVERS    1  Proportion licensed drivers
     TAX        1  Motor fuel tax (cents/gal.)
     INC        1  Per Capita Personal income ($)
     ROAD       1  Length Federal Highways (mi.)

                        Fuel Consumption across the US                       2

Model: MODEL1
Dependent Variable: FUEL       Fuel consumption (/person)

                             Analysis of Variance

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

       Model            5 424492.95611  84898.59122       21.759       0.0001
       Error           42 163873.52306   3901.75055
       C Total         47 588366.47917

           Root MSE      62.46399     R-square       0.7215
           Dep Mean     576.77083     Adj R-sq       0.6883
           C.V.          10.82995

                             Parameter Estimates

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

     INTERCEP   1    418.985496  175.55875819         2.387        0.0216
     DENSITY    1   -142.916949   56.26214461        -2.540        0.0149
     DRIVERS    1   1087.190144  206.02402130         5.277        0.0001
     TAX        1    -35.100258   12.21923670        -2.873        0.0064
     INC        1     -0.033522    0.02080057        -1.612        0.1145
     ROAD       1     -0.005250    0.00338081        -1.553        0.1280

                                                   Variance
     Variable  DF     Type I SS    Type II SS     Inflation

     INTERCEP   1      15967901         22224    0.00000000
     DENSITY    1        203621         25176    1.97840408
     DRIVERS    1        173389        108651    1.57323850
     TAX        1         19905         32195    1.62583784
     INC        1         18170         10134    1.71491695
     ROAD       1   9408.753405   9408.753405    1.67843993

                   Variable
     Variable  DF     Label

     INTERCEP   1  Intercept
     DENSITY    1  Population density
     DRIVERS    1  Proportion licensed drivers
     TAX        1  Motor fuel tax (cents/gal.)
     INC        1  Per Capita Personal income ($)
     ROAD       1  Length Federal Highways (mi.)

                        Fuel Consumption across the US                       3

       --+----+----+----+----+----+---       ---+----+----+----+----+----+---
   300 +                             +   0.4 +                              +
       |                             |       |                              |
       |                             |       |         R                    |
       |                       W     |       |        N         T           |
       |                             |       |                         N    |
   200 +                             +   0.3 +    N                         +
R      |                             | H     |                              |
E      |                             |       |                              |
S      |                             |       |        C I                   |
I      |                             |       |                              |
D  100 +                N        S   +   0.2 +         M                S   +
U      |                             |       |                U M  NI       |
A      |       N  ? I     ?          |       |                              |
L      |       ?    N   ?       N    |       |                              |
       |   N     I    F  ?           |       |        M  K L  ?             |
     0 +             MT?M            +   0.1 +           V N? C     ? W     +
       |          P    ?             |       |               ???ANA         |
       |        ?   L?ND M ANK       |       |           P  O MI   ?        |
       |               ?     ?       |       |             I  WM M          |
       |             W W  M O        |       |               F              |
  -100 +                    C        +   0.0 +                              +
       --+----+----+----+----+----+---       ---+----+----+----+----+----+---
        300  400  500  600  700  800           300  400  500  600  700  800

                  PRED                                   PRED

      ---+----+----+----+----+----+---      -+-----+-----+-----+-----+-----+-
      |                              |      |                               |
  0.3 +                              +    2 +                               +
      |                        W     |      |                               |
      |                              |      |                          W    |
      |                              |      |                               |
      |                              |      |                               |
C     |                              | D    |                               |
O 0.2 +                              + F  1 +                               +
O     |                              | F    |                            S  |
K     |                              | I    |       N                       |
D     |                              | T    |       C           N           |
      |                              | S    |       M   ?        N      N   |
      |                          S   |      |  N      I   IN   ?? M         |
  0.1 +                              +    0 +           P  M ??M            +
      |        N                     |      |             LOW??    A        |
      |         R                    |      |         M       ? MM  ??      |
      |                 N            |      |               W        I      |
      |        C     W       I  N    |      |         R                     |
      |        MM ? I N? ?? ??       |      |                               |
  0.0 +    N     IP ?????AMA         +   -1 +                               +
      |                              |      |                               |
      ---+----+----+----+----+----+---      -+-----+-----+-----+-----+-----+-
        300  400  500  600  700  800        300   400   500   600   700  800

                  PRED                                  PRED

                        Fuel Consumption across the US                       4

Model: MODEL1
Dependent Variable: FUEL       Fuel consumption (/person)

                             Analysis of Variance

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

       Model            5 286714.49335  57342.89867       23.230       0.0001
       Error           40  98738.74578   2468.46864
       C Total         45 385453.23913

           Root MSE      49.68369     R-square       0.7438
           Dep Mean     563.80435     Adj R-sq       0.7118
           C.V.           8.81222

                             Parameter Estimates

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

     INTERCEP   1    446.662703  140.83345436         3.172        0.0029
     DENSITY    1   -116.339797   46.68535896        -2.492        0.0169
     DRIVERS    1    945.541088  166.76117541         5.670        0.0001
     TAX        1    -25.273813   10.59334893        -2.386        0.0219
     INC        1     -0.045564    0.01799578        -2.532        0.0154
     ROAD       1     -0.002158    0.00296926        -0.727        0.4716

                   Variable
     Variable  DF     Label

     INTERCEP   1  Intercept
     DENSITY    1  Population density
     DRIVERS    1  Proportion licensed drivers
     TAX        1  Motor fuel tax (cents/gal.)
     INC        1  Per Capita Personal income ($)
     ROAD       1  Length Federal Highways (mi.)

                        Fuel Consumption across the US                       5

       --+----+----+----+----+----+---      -+-----+-----+-----+-----+-----+-
   150 +                             +      |                               |
       |                      S      |    2 +                          S    +
       |                             |      |                               |
       |                N            |      |                               |
   100 +                             +      |                               |
       |                             |      |                               |
R      |                 NM          | D    |                               |
E      |          V I                | F  1 +       N                       +
S   50 +       N                     + F    |                  N            |
I      |       ?   K    I            | I    |                               |
D      |             N U?            | T    |       C            N          |
U      |              F MT           | S    |        M  VKI      M          |
A    0 +         I   MT   A          +      |              N U ? T          |
L      |    N         DS   K         |    0 +          I    ?TSM A          +
       |        M  P W ?   N         |      |   N        P ?D??    ?        |
       |         R  LO?    O?        |      |         M    L ?  M ? ?       |
   -50 +                  M          +      |              W                |
       |              W  MC          |      |                    M          |
       |             W               |      |         R                     |
       |                             |   -1 +                               +
  -100 +                             +      |                               |
       --+----+----+----+----+----+---      -+-----+-----+-----+-----+-----+-
        300  400  500  600  700  800        300   400   500   600   700  800

                  PRED                                  PRED

                        Fuel Consumption across the US                       6

Model: MODEL1
Dependent Variable: FUEL       Fuel consumption (/person)

                             Analysis of Variance

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

       Model            3 396914.63448 132304.87816       30.407       0.0001
       Error           44 191451.84469   4351.17829
       C Total         47 588366.47917

           Root MSE      65.96346     R-square       0.6746
           Dep Mean     576.77083     Adj R-sq       0.6524
           C.V.          11.43668

                             Parameter Estimates

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

     INTERCEP   1    174.740286  149.74697643         1.167        0.2495
     DENSITY    1   -181.450977   45.44006100        -3.993        0.0002
     DRIVERS    1   1063.902509  187.12688051         5.685        0.0001
     TAX        1    -23.107457   10.80383436        -2.139        0.0380

                   Variable
     Variable  DF     Label

     INTERCEP   1  Intercept
     DENSITY    1  Population density
     DRIVERS    1  Proportion licensed drivers
     TAX        1  Motor fuel tax (cents/gal.)