ANEXOS
123
MODELOS CON DATOS AGRUPADOS Y DISTINGUE POR VARIABLE DICOTOMICA
PARA CADA MODULO DE AGUA.
sum Agua Producto
----------------------------------------------------------------------------------------------------------------------------------------------
Variable
Obs
Mean
Std. Dev.
Min
Max
--------------
+ -------------------------------------------------------------------------------------------------------------------
Agua
628
5610.631
7470.824
2.8
47842.4
Producto
628
10775.13
14900.7
14
87186
----------------------------------------------------------------------------------------------------------------------------------------------
. reg Producto Agua
Source
|
SS
df
MS
Number of obs = 628
------------- + --------------------------------------------------------
F( 1, 626)
=
934.96
Model
|
8.3384e+10
1
8.3384e+10
Prob > F
= 0.0000
Residual
|
5.5830e+10
626
.092306868
R-squared = 0.9504
------------- + --------------------------------------------------------
Adj R-squared = 0.5983
Total
|
1.3921e+11
627
222031057
Root MSE = 9443.8
----------------------------------------------------------------------------------------------------------------------------------------------
Producto |
Coef.
Std. Err.
z
P>|z|
[95% Conf. Interval]
-------------- + ----------------------------------------------------------------------------------------------------------------------
Agua
1.543614 .0504827
30.58
0.000 1.444478
1.64275
_cons
|
2114.476 471.422
4.49
0.000 1188.716
3040.236
----------------------------------------------------------------------------------------------------------------------------------------------
Breusch-Pagan / Cook-Weisberg test for heteroskedasticity
Ho: Constant variance
Variables: fitted values of Producto
chi2(1)
= 693.77
Prob > chi2
= 0.0000
. reg Producto Agua, vce(robust)
Linear regression
Number of obs
= 628
F( 1, 626)
=
234.00
Prob > F
=
0.0000
R-squared
=
0.5990
Root MSE
= 9443.8
