Class notes
Intervalos de Confianza
- Course
- Institution
Apuntes (Apuntes)
[Show more]
Seller
Follow
antoniomuozsnchez
Content preview
2ª Parte Tema 10Estimación por Intervalos
, Inferencia Estadística
La Inferencia es un proceso mediante el cual, a partir de la información
obtenida en una muestra, extraemos conclusiones sobre una población.
X=Variable poblacional de interés ~ F(x, θ),
θ parámetro fijo desconocido.
POBLACIÓN
I1,…,In (n individuos)
INFERENCIA
Muestra m.a.s.
(X1, X2,…,Xn )
Datos (x1, x2,…,xn ) n-observaciones
Xi ~ X , i = 1,…,n
Independientes
, ¿Cómo se puede Inferir?
Sea X ~ F(x, θ), siendo θ un parámetro desconocido.
Elegimos una m.a.s. (X1, X2,…,Xn )
Estimación Puntual
Estimación
Inferencia Estimación por Intervalos
Contrastes de Hipótesis
, Intervalos de confianza (IC)
Hasta el momento: X ~ F(x, θ), siendo θ un parámetro desconocido
(x1, x2,…,xn) m.a.s.
estimación puntual de θ
θ̂ θ̂ (x 1 ,..., x n ) (valor numérico concreto)
Ejemplo: X = Nº averías mensuales de una máquina
µ = E[X] parámetro a estimar
Dada (x1, x2, x3, x4) m.a.s.
Objetivo x1 x2 x3 x4 obtener una estimación de
y ˆ X 4
(2,3,1,2) ˆ1 2 averías
(2,1,0,2) ˆ 2 5 4 1.25 averías
(4,1,1,3) ˆ 3 9 4 2.25 averías
4
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller antoniomuozsnchez. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $5.88. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
48756 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 15 years now