Luokat: Kaikki - intervalos - confianza - poblaciones - inferencia

jonka CK r i s t o 4 vuotta sitten

342

INFERENCIA

En el ámbito de la estadística, la inferencia y estimación puntual son técnicas cruciales para determinar valores de parámetros desconocidos. Las propiedades de los estimadores, como la consistencia, insesgadez, robustez y eficiencia, son fundamentales para asegurar la precisión y fiabilidad de los resultados obtenidos.

INFERENCIA

INFERENCIA

To name your story, you have to think about the overall message and what you want your audience to understand from the story. Also, make it relevant and easy to remember.

Teoría de errores en experimentación

Diferencia entre e valor obtenido y el valor real de la magnitud.
Factores que influyen

Errores no sistemáticos o aleatorios

Aumento en la variabilidad de las mediciones

Alteran aleatoriamente las medidad

Se producen debido a causas imponderables

Errores sistemáticos

Producen sesgo en las mediciones

Actúan en el mismo sentido

Se reproducen constantemente

Defecto del método de trabajo

Defecto de los aparatos de medida

Determinación del tamaño muestral

intervalo de confianza correcto
Garantiza un precisión determinada
Encontrar el tamaño muestral n

Intervalos de confianza

The middle of the story is where you add layers of complications that will lead to the end. Reveal more about the character's journey. Did their personality go through changes? How did they overcome the challenges? And as you build up the story’s central conflict, make it more personal to that character. Also, from the middle act, you have to lead into the final act.

Intervalos que nos brindan informacion, intervalo de confianza unilateral izquierdo, intervalo de confianza unilateral derecho.

Each story has a main character and that character usually needs to solve a problem or challenge. The character's challenge is the one that creates tension throughout the story.

Intervalo de confianza para proporciones

El intervalo de confianza asintótico 1 − ∞ para la proporción p

Intervalo de confianza para dos poblaciones normales

Type in any other challenges which other characters in the story need to face.

R calcularemos los intervalos de confianza

Intervalos para la razón de varianzas: var.test

Intervalos para la diferencia de medias: t.test

para la diferencia de medias μ_D = μ_X − μ_Y.

para la razón de varianzas σ2_X / σ2_Y , con μX y μY desconocidas.

para la razón de varianzas σ2_X/σ2_Y , con μ_X y μ_Y conocidas.

para la diferencia de medias μ_X − μ_Y , con σ_X y σ_Y desconocidas.

para la diferencia de medias μ_X − μ_Y , con σ_X y σ_Y desconocidas pero iguales.

para la diferencia de medias μ_X − μ_Y , con σ_X y σ_Y conocidas.

Intervalos de confianza para una población normal

In most stories, there are 3 challenges. The number 3 is a mystical number symbolizing completeness. Try to come up with interesting challenges with which your character needs to struggle.
See a few examples below:

El intervalo de confianza 1 − ∞

para la varianza σ2, con μ desconocida

para la varianza σ2, con μ conocida

para la media μ, con σ desconocida

para la media μ, con σ conocida

Distribuciones muestrales

Construcción de intervalos de confianza, Criterios de decisión en hipótesis
Estadístico pivote para dos variables normales

Pivote para la razón de varianzas

Pivote para la razón de varianzas conocidas las medias.

Pivote con diferencias de medias

Pivote con diferencias de medias con varianzas desconocidas pero iguales.

Pivote para la diferencia de medias conocidas las varianzas.

Estadísticos pivote para una variable normal

Pivote para la varianza

Pivote para la varianza conocida la media

Pivote para la media

Pivote para la media conocida la varianza

Estimación puntual

The ending of a story is essential. We all know that if the ending is weak, what happened before loses its importance. So make it unpredictable, but fair. A resolved ending answers all the questions and ties up any loose threads from the plot.

obtener un valor para un parámetro desconocido

This is the moment when the main character surpasses the last obstacle and finally faces their greatest challenge.
The climax usually follows one of these patterns:


Type in your answer.

Propiedades

La robustez

El estimador cambia similarmente

Experimenta modificaciones

La eficencia

Tiene menos varianza

Estimador mas eficiente

La consistencia

a medida que aumenta el tamaño muestral

La media se aproxima al parámetro

La insesgadez

No importa el tamaño de la muestra

La media se tratara de estimar

Simulación de variables aleatorias

Forma mas efectiva
conceptos claros
comprensión mas amigable
fácil de ilustración
Serie de Experimentos
Lógicas mas relevantes del fenomeno
Relaciones Matematicas
Reproduce variables

Métodos de muestreo

In the beginning of the story (or the exposition), you will need to introduce the setting and characters. You might also want to introduce the main conflict. This part of the story is important because it gives the reader necessary background information and maybe even a first insight into a character’s personality.

Tipos

The setting (time & place) of a story can change throughout the plot.

Muestreo por conglomerados

Sensory details include sight, sound, touch, smell, and taste. These details are important because they create depth in your setting.
See a few examples below:

Conglomerados homogéneos entre si

Elementos agrupados de manera natural

Es costoso efectuar un muestreo

Muestreo sistemático

The weather is an important element in your story because it can highly influence the ambiance and the mood of the characters.

Tienden a estar cercanos unos a otros

The most affected character is the main character. Write down here if he/she is affected by these weather conditions in any way. For example, if they lost a family member or their home during a hurricane, etc.

Elementos mas parecidos

Decide if you want to include an element of nature in your story. For example, a rainbow can be a very nice choice for a happy ending. The mist in a story can represent mystery and secrets. A thunder can appear in the background at the moment when the 'bad guy' of the story makes its appearance, etc.

Ordenados en lista

Does your story include catastrophic weather? See a few suggestions below or add your own:
- hurricane, earthquake, storm, etc

Muestreo estratificado

The time of the story can also change. It can describe the event of a single day or can include an entire year's plot. Anyway, don't forget to mention it.

Se comportan de forma diferente

No son homogéneas

Muestreo aleatorio simple

Your story can take place wherever your imagination will take you to.
For example: in an elevator, in an enchanted forest, etc. Don't forget to give details of the environment each time the setting changes, otherwise, the story can be confusing. Also, mention the seasons as each of them has unique weather and events.

características analizadas

Son homogéneas

Caracterizada

Characters are essential to a good story. Usually, the protagonist(s) is/are the most affected by the plot. Introduce a character by focusing on their actions, interests, and occupation, as the physical appearance doesn't make a difference in most cases.

por recoger información

Type in the name of your character.

muestras representativas

What is your character's main goal?

fight Evilfind lovedefeat his/her enemyrule the worldmake friendstime travelmake an awesome discoveryOther

garantiza

Which traits best describe the character's personality? Choose more if necessary:

introvertedloyalkindindependentquick-thinkingadventuresomeidealisticsweet-naturedcalmrisk-takercreativewittystrictfussyweirdclumsyharshaggressivecarelessclingingcowardlycrueldeceitfulimpulsiveOther

contestar preguntas

Choose the type of your chacter:

Protagonist (main character)Antagonist (main character's opponent)Flat (stereotypical character)Round (his/ her personality develops throughout the story)Static (doesn't evolve as a person throughout the story)Dynamic (dramatical change in personality)Confidant (the main character trusts him/ her)Foil (contrasting character who enhances the personality of another character)Other