Material de apoyo para el video control estadístico del proceso
-
Upload
laksmi-rodriguez -
Category
Education
-
view
227 -
download
0
Transcript of Material de apoyo para el video control estadístico del proceso
![Page 1: Material de apoyo para el video control estadístico del proceso](https://reader036.fdocuments.es/reader036/viewer/2022082704/558cbc1fd8b42ad7358b4569/html5/thumbnails/1.jpg)
PROCESOS INDUSTRIALES EN EL ÁREA DE MANUFACTURA
SPC
CONTROL ESTADÍSTICO DEL PROCESO
LIC. EDGAR GERARDO MATA ORTIZ
LAKSMI RODRIGUEZ CORTEZ
DANIEL AGUILERA MUÑOZ
3°C
![Page 2: Material de apoyo para el video control estadístico del proceso](https://reader036.fdocuments.es/reader036/viewer/2022082704/558cbc1fd8b42ad7358b4569/html5/thumbnails/2.jpg)
Laksmi: What is the variability in processes?
Dany: Variability is a kinf of small changes that are involuntary and unavoidable in the process.
Laksmi: ¿Can be represented as the varibility?
Dany: The variability can be represented numerically. With the variance calculation and graphically with a histogram.
Laksmi: The rules attempt to distinguish unnatural patterns from natural patterns based on several criteria:
Dany: The absence of points near the centerline
![Page 3: Material de apoyo para el video control estadístico del proceso](https://reader036.fdocuments.es/reader036/viewer/2022082704/558cbc1fd8b42ad7358b4569/html5/thumbnails/3.jpg)
Laksmi: The absence of points near the control limits
Dany: The presence of points outside the control limits.
Laksmi: Other unnatural patterns
Dany: What are the rules nelson?
Laksmi: Nelson Rule 1One point is more than 3 standard deviations from the mean.
![Page 4: Material de apoyo para el video control estadístico del proceso](https://reader036.fdocuments.es/reader036/viewer/2022082704/558cbc1fd8b42ad7358b4569/html5/thumbnails/4.jpg)
Dany: Nelson Rule 2Nine (or more) points in a row are on the same side of the mean.
Laksmi: Nelson Rule 3Six (or more) points in a row are continually increasing (or decreasing).
![Page 5: Material de apoyo para el video control estadístico del proceso](https://reader036.fdocuments.es/reader036/viewer/2022082704/558cbc1fd8b42ad7358b4569/html5/thumbnails/5.jpg)
Dany: Nelson Rule 4Fourteen (or more) points in a row alternate in direction, increasing then decreasing.
Laksmi: Nelson Rule 5Two (or three) out of three points in a row are more than 2 standard deviations from the mean in the same direction.
![Page 6: Material de apoyo para el video control estadístico del proceso](https://reader036.fdocuments.es/reader036/viewer/2022082704/558cbc1fd8b42ad7358b4569/html5/thumbnails/6.jpg)
Dany: Rule 6Four (or five) out of five points in a row are more than 1 standard deviation from the mean in the same direction.
Laksmi: Nelson Rule 7Fifteen points in a row are all within 1 standard deviation of the mean on either side of the mean.
![Page 7: Material de apoyo para el video control estadístico del proceso](https://reader036.fdocuments.es/reader036/viewer/2022082704/558cbc1fd8b42ad7358b4569/html5/thumbnails/7.jpg)
Dany: Rule 8
Eight points in a row exist with none within 1 standard deviation of the mean and the points are in both directions from the mean.