RPD -- Example 8.3 -- Algae Density: CO2 only, Both Reps

                                    SSRES_R

                                    0.798439


                                    SSRES_F

                                    0.634385


                              SSLF        F0    PVALF0

                          0.164054 0.3291313 0.9645642
            RPD -- Example 8.3 -- Algae Density: CO2 only, Both Reps

                              The RSREG Procedure

                Coding Coefficients for the Independent Variables
 
                    Factor    Subtracted off      Divided by

                    day             7.500000        6.500000


                     Response Surface for Variable density

                    Response Mean                   3.360071
                    Root MSE                        0.178711
                    R-Square                          0.9886
                    Coefficient of Variation          5.3187


                                Type I Sum
    Regression          DF      of Squares    R-Square    F Value    Pr > F

    Linear               1       65.506825      0.9388    2051.09    <.0001
    Quadratic            1        3.470618      0.0497     108.67    <.0001
    Crossproduct         0               0      0.0000        .       .    
    Total Model          2       68.977443      0.9886    1079.88    <.0001


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

   Lack of Fit        11        0.164054        0.014914       0.33    0.9646
   Pure Error         14        0.634385        0.045313                     
   Total Error        25        0.798439        0.031938                     


                                                                       Parameter
                                                                        Estimate
                                    Standard                          from Coded
Parameter   DF       Estimate          Error   t Value   Pr > |t|           Data

Intercept    1      -0.462148       0.117741     -3.93     0.0006       3.756757
day          1       0.745606       0.036112     20.65     <.0001       2.466329
day*day      1      -0.024411       0.002342    -10.42     <.0001      -1.031382


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

       day         2       68.977443       34.488721    1079.88    <.0001
            RPD -- Example 8.3 -- Algae Density: CO2 only, Both Reps

                              The RSREG Procedure
           Canonical Analysis of Response Surface Based on Coded Data

                                      Critical Value
                     Factor           Coded         Uncoded

                     day           1.195643       15.271679

                  Predicted value at stationary point: 5.231181


                                          Eigenvectors
                           Eigenvalues             day

                             -1.031382        1.000000

                         Stationary point is a maximum.