
Estimar por MCO
Authored by Víctor Ruiz
Social Studies
3rd Grade
Used 13+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
En la estimación MCO los estimadores hacen mínima:
La suma de los residuos.
El cuadrado de la suma de los residuos.
La suma de los residuos al cuadrado.
Todas son correctas.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Un estimador es insesgado cuando su Esperanza matemática es:
Nula.
Igual al valor poblacional.
Es constante.
En el límite es cero.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La hipótesis de rango pleno tiene que ver con el problema de:
Multicolinealidad.
Autocorrelación.
Heteroscedasticidad.
Suficiencia estadística.
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
La matriz de varianzas y covarianzas de u es por hipótesis:
De orden n, simétrica y escalar
De orden k, semidefinida positiva y no escalar.
De orden n-k, simétrica y escalar.
De orden n y no escalar.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La matriz de varianzas y covarianzas de los estimadores MCO es:
Función de la varianza de la perturbación aleatoria.
De orden k y simétrica.
Función de la matriz inversa de X'X.
Todas son ciertas.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
El valor de la suma de los residuos al cuadrado es:
ûû´
û'û
(X´X) X´(XB+U)
uu´
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
En un modelo con término independiente se cumple siempre que:
SCR=ST+SE
SCR-SE=ST
ST=SE+SCR
SE=ST+SCR
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