ANEXOS
101
Breusch-Pagan / Cook-Weisberg test for heteroskedasticity
Ho: Constant variance
Variables: fitted values of PCeB
chi2(1) = 4.67
Prob > chi2 =
0.0306
Linear regression
Number of obs
= 46
F( 1, 44)
=
494.77
Prob > F
=
0.0000
R-squared
=
0.9187
Root MSE
=
2465.5
----------------------------------------------------------------------------------------------------------------------------------------------
|
Robust
[95% Conf. Interval]
PCeB
|
Coef
Std. Err.
t
P>|t|
------------------- + -------------------------------------------------------------------------------------------------------------------
ACeB
|
1.178621
.0529873
22.24
0.000
1.071832
1.28541
_cons
|
-1446.479 492.9917
-2.93
0.005
-2440.039 -452.9198
----------------------------------------------------------------------------------------------------------------------------------------------
Cebaba con agua por Bombeo se tiene un coeficiente estimado de 0.9710
reg lPCeB lACeB
Source
|
SS
df
MS
Number of obs = 46
------------- +
------------------------------
F( 1, 44)
=
1419.54
Model
|
121.128867
1
121.128867
Prob > F
= 0.0000
Residual
|
3.75450652
44
.085329694
R-squared = 0.9699
------------- +
------------------------------
Adj R-squared = 0.9693
Total
|
124.883374
45
2.77518608
Root MSE = .29211
---------------------------------------------------------------------------------------------------------------------------------------------
lPCeB |
Coef.
Std. Err.
t
P>|t|
[95% Conf. Interval]
------------- + -------------------------------------------------------------------------------------------------------------------------
lACeB |
.9710325
.0257727
37.68
0.000
.919091
1.022974
_cons
|
.2220412
.227202
0.98
0.334
-.2358544
.6799367
-----------------------------------------------------------------------------------------------------------------------------------------------
