Table 3. Model Results*

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Parameter             t     Model 1         Model 2         Model 3
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RHO(t)                3     -0.098          -0.058          -0.071
autoregressive parameter    (.014)          (.029)          (.033)

                      4      0.069           0.108           0.103
                            (.010)          (.019)          (.018)

                      5     -0.015           0.044           0.034
                            (.023)          (.050)          (.043)
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BETA(t)               3      0.053           0.089           0.087
learning coefficient        (.004)          (.016)          (.017)

                      4      0.026           0.020           0.017
                            (.004)          (.007)          (.006)

                      5      0.011           0.022           0.025
                            (.006)          (.009)          (.008)
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GAMA(t)               3     -1.604          -1.460          -1.467
price elasticity            (.021)          (.066)          (.070)

                      4     -1.765          -1.807          -1.609
                            (.063)          (.104)          (.113)

                      5     -1.219          -0.813          -0.844
                            (.027)          (.070)          (.061)
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SIQMA(t)              3      0.740           0.957           1.033
supply coefficient          (.025)          (.043)          (.097)

                      4      0.443           0.463           0.357
                            (.036)          (.056)          (.061)

                      5      0.647           0.786           0.615
                            (.029)          (.054)          (.063)
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LAMDA(t)              3                                      0.316
selection bias                                              (.097)

(mills ratio          4                                     -0.459
coefficient)                                                (.132)

                      5                                     -0.421
                                                            (.104)
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 2
R                     3      0.880           0.810           0.795

                      4      0.691           0.676           0.678

                      5      0.817           0.722           0.763
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Std. error of         3      0.643           0.790           0.829
regression
                      4      0.392           0.400           0.375

                      5      0.428           0.515           0.4443
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Std. dev. of depend.  3      1.767           1.780           1.780
variable
                      4      0.668           0.654           0.654

                      5      0.903           0.903           0.903
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