Civil

PRUEBA DE ECONOMETRÍA

POR: PABLO A. QUIÑONEZ R.

EJERCICIO 2

A) q=β0+β1pc+ β2y+u

Q = 11.8756193872 - 0.151654692403*PC + 0.000111571318083*Y

Dependent Variable: Q | | |
Method:Least Squares | | |
Date: 11/19/12 Time: 15:24 | | |
Sample: 2005Q1 2009Q4 | | |
Included observations: 20 | | |
| | | | |
| | | | |
| Coefficient | Std. Error |t-Statistic | Prob.   |
| | | | |
| | | | |
C | 11.87562 | 6.178894 | 1.921965 | 0.0715 |
PC | -0.151655 | 0.049546 | -3.060877 | 0.0071 |
Y | 0.000112 | 2.74E-05 | 4.066479 | 0.0008 || | | | |
| | | | |
R-squared | 0.557571 |     Mean dependent var | 13.65000 |
Adjusted R-squared | 0.505520 |     S.D. dependent var | 3.801316 |
S.E. of regression | 2.673057 |    Akaike info criterion | 4.941803 |
Sum squared resid | 121.4689 |     Schwarz criterion | 5.091163 |
Log likelihood | -46.41803 |     Hannan-Quinn criter. | 4.970960 |
F-statistic | 10.71211 |    Durbin-Watson stat | 1.795282 |
Prob(F-statistic) | 0.000976 | | | |
| | | | |
| | | | |

Ante una subida de $1 en el precio del café, el consumo de este disminuirá en 0.15kilogramos, ceteris paribus. Ante un aumento del ingreso de $1, el consumo del café subirá en 0.0001 kilogramos, ceteris paribus.

B) q=β0+β1pc+ β2y+β3pl+u

Q = 8.82185139428 - 0.195151171172*PC+ 0.000111620126667*Y + 0.0840514050332*PL

Dependent Variable: Q | | |
Method: Least Squares | | |
Date: 11/19/12 Time: 15:27 | | |
Sample: 2005Q1 2009Q4 | | |
Includedobservations: 20 | | |
| | | | |
| | | | |
| Coefficient | Std. Error | t-Statistic | Prob.   |
| | | | |
| | | | |
C | 8.821851 | 27.94815 | 0.315651 | 0.7563 |
PC |-0.195151 | 0.390962 | -0.499157 | 0.6245 |
Y | 0.000112 | 2.83E-05 | 3.947876 | 0.0012 |
PL | 0.084051 | 0.749015 | 0.112216 | 0.9120 |
| | | | |
| | | | |
R-squared | 0.557919 |...