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Estadística (Funda. Investigación) (Mauro)
Análisis de datos
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Test de Hipótesis
Estadística (Funda. Investigación) (Mauro) > Análisis de datos
23 cards
Cards (31)
Inferencia
Llevar resultados de una
muestra
-->
población
Muestra:
Tiene que ser
representativa
Se calculan los
estimadores
2 formas de inferir:
Estimación
puntual
=
muestra
y
población
asumen el mismo valor
Estimación por
intervalos
de
confianza
Para calcular la estimación por intervalos de confianza:
Nivel de
confianza
--> 90%,95%,99%
Nivel de
significación
(
alpha
) --> 0.1,0.05,0.01
2.
Estimadores
(
media
(x),
desviación
(s),
muestra
(n))
3. Distribuciones --->
Normal
(
Z)
,
T-Student
4. Fórmulas
Fórmulas
Varianza poblacional conocida (
σ2
) -->
A)
Media
B)
Z
C)
Desviacion poblacional (o)
D)
muestra
4
Fórmulas
Varianza poblacional desconocida (
s²
) --->
A)
Media
B)
T n-1
C)
Desviacion muestral (s)
D)
muestra
4
I.C Proporción
(Fórmula)
A)
proporcion
B)
Z
C)
P(1-P)
D)
Muestra
4
Tabla
Z
= Resultado se busca de adentro - afuera
Tabla
T
= Resultado se busca de afuera - adentro
See all 31 cards
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