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ESCUELA SUPERIOR
POLITECNICA DE
CHIMBORAZO
ESCUELA DE INGENIERIA
ELECTRONICA
TELECOMUNICACIONES Y
REDES

JESSICA ALEXANDRA
MONTERO VALENCIA
R-COMMANDER EN PRUEBA
DE HIPÓTESIS
R-COMMANDER
R-Commander es una Interfaz
Gráfica de Usuario (GUI en
inglés), creada por
John Fox, que permite acceder
a muchas capacidades del
entorno estadístico

R sin que el usuario tenga que
conocer
el
lenguaje
de
comandos propio de este
entorno. Al arrancar RCommander, se nos presentan
dos ventanas:
VENTANAS – PRUEBA DE HIPOTESIS
VENTANAS – PRUEBA DE HIPOTESIS
EJERCICIO RESUELTO EN
R-COMMANDER


Un criador de pollos sabe por experiencia que el
peso de los pollos de cinco meses es 4,35 libras. Los
pesos siguen una distribución normal. Para
tratar de aumentar el peso de dichas aves se le
agrega un aditivo al alimento. En una muestra de
pollos de cinco meses se obtuvieron los siguientes
pesos (en libras).

4,41
4,36

4,37
4,38

4,33
4,40

4,35
4,39

4,30

4,39

En el nivel 0,01, el aditivo a ha aumentado el peso
medio de los pollos?
Planteamiento de la hipótesis
H1 u >4.35
H0 u<=4.35

Nivel de Significancia
α=0.01

Criterio
Si p-valor < α se Rechaza H0 y se Acepta H1
Ingresamos los datos:
 Seleccionamos : Data - New data set
 Escribimos el nombre
 Ingresamos los datos en la tabla
Cálculos
Seleccionamos: Stadistics – Means – Simplesamplet-test
A

continuación aparece la venta:
 De

la ventana anterior, podemos observar que
lo de azul es el resultado:

data: ejercicio1$var1
t = 1.6777, df = 9, p-value = 0.1277
alternative hypothesis: true mean is not equal to
4.35
99 percent confidence interval:
4.333133 4.402867
sample estimates:
mean of x
4.368
Finalmente hacemos un análisis y se toma una
Análisis
 El estadístico de contraste es t= 1.6777
 Los grados de libertad df=9
 El p-value = 0.1277
Decisión
Como p-value>0.01 se acepta la hipótesis nula y
se rechaza la hipótesis alternativa, por lo tanto ese
aditivo no aumenta el peso medio de los pollos.

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Mini manual r commander

  • 1. ESCUELA SUPERIOR POLITECNICA DE CHIMBORAZO ESCUELA DE INGENIERIA ELECTRONICA TELECOMUNICACIONES Y REDES JESSICA ALEXANDRA MONTERO VALENCIA
  • 3. R-COMMANDER R-Commander es una Interfaz Gráfica de Usuario (GUI en inglés), creada por John Fox, que permite acceder a muchas capacidades del entorno estadístico R sin que el usuario tenga que conocer el lenguaje de comandos propio de este entorno. Al arrancar RCommander, se nos presentan dos ventanas:
  • 4. VENTANAS – PRUEBA DE HIPOTESIS
  • 5. VENTANAS – PRUEBA DE HIPOTESIS
  • 6. EJERCICIO RESUELTO EN R-COMMANDER  Un criador de pollos sabe por experiencia que el peso de los pollos de cinco meses es 4,35 libras. Los pesos siguen una distribución normal. Para tratar de aumentar el peso de dichas aves se le agrega un aditivo al alimento. En una muestra de pollos de cinco meses se obtuvieron los siguientes pesos (en libras). 4,41 4,36 4,37 4,38 4,33 4,40 4,35 4,39 4,30 4,39 En el nivel 0,01, el aditivo a ha aumentado el peso medio de los pollos?
  • 7. Planteamiento de la hipótesis H1 u >4.35 H0 u<=4.35 Nivel de Significancia α=0.01 Criterio Si p-valor < α se Rechaza H0 y se Acepta H1
  • 8. Ingresamos los datos:  Seleccionamos : Data - New data set  Escribimos el nombre  Ingresamos los datos en la tabla
  • 9. Cálculos Seleccionamos: Stadistics – Means – Simplesamplet-test
  • 11.  De la ventana anterior, podemos observar que lo de azul es el resultado: data: ejercicio1$var1 t = 1.6777, df = 9, p-value = 0.1277 alternative hypothesis: true mean is not equal to 4.35 99 percent confidence interval: 4.333133 4.402867 sample estimates: mean of x 4.368
  • 12. Finalmente hacemos un análisis y se toma una Análisis  El estadístico de contraste es t= 1.6777  Los grados de libertad df=9  El p-value = 0.1277 Decisión Como p-value>0.01 se acepta la hipótesis nula y se rechaza la hipótesis alternativa, por lo tanto ese aditivo no aumenta el peso medio de los pollos.