Datos:
Grafico de control:
Identificacion de las Nelson Rules
Nelson rule one: One point is more than 3 standard desviationd from the mean
Nelson rule two: Nine (or more) points in a row are on the same side of the mean
Enlace documento excel:
https://drive.google.com/open?id=0B6URAfF0adKJYjMyZWVXa3k5M0k
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