Gráfico Q-Q modificado para grandes tamaños de muestra
The Q-Q plot is a graphical tool for assessing the fit of observed data to a theoretical distribution, in which every single observation in the data is represented by a symbol (usually a dot). In many occasions, due either to natural variations of the data or to a large sample size, the Q-Q plot cou...
- Autores:
-
Velez, Jorge Iván
Correa Morales, Juan Carlos
- Tipo de recurso:
- Fecha de publicación:
- 2015
- Institución:
- Universidad Santo Tomás
- Repositorio:
- Repositorio Institucional USTA
- Idioma:
- eng
- OAI Identifier:
- oai:repository.usta.edu.co:11634/39600
- Acceso en línea:
- https://revistas.usantotomas.edu.co/index.php/estadistica/article/view/1441
http://hdl.handle.net/11634/39600
- Palabra clave:
- Gráfico QQ
gráficos estadísticos
bondad de ajuste.
- Rights
- License
- http://purl.org/coar/access_right/c_abf2
| Summary: | The Q-Q plot is a graphical tool for assessing the fit of observed data to a theoretical distribution, in which every single observation in the data is represented by a symbol (usually a dot). In many occasions, due either to natural variations of the data or to a large sample size, the Q-Q plot could be interpreted as a sign of failure of the proposed model. An alternative is to consider a special set of characteristics of the data such as the sample quantiles that, jointly with its theoretical counterparts, allow the user to effectively compare both. We propose and illustrate a modified Q-Q plot that helps to visualise the differences between the observed quantiles and its corresponding theoretical values, and overcome some technical problems of the traditional Q-Q plot. |
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