Signal | Kind | Description |
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Individual Nelson Rule 1 | Individual | One point is more than 3 standard deviations from the mean. |

Individual Nelson Rule 2 | Individual | Nine (or more) points in a row are on the same side of the mean. |

Individual Nelson Rule 3 | Individual | Six (or more) points in a row are continually increasing (or decreasing). |

Individual Nelson Rule 4 | Individual | Fourteen (or more) points in a row alternate in direction, increasing then decreasing. |

Individual Nelson Rule 5 | Individual | Two (or three) out of three points in a row are more than 2 standard deviations from the mean in the same direction. |

Individual Nelson Rule 6 | Individual | Four (or five) out of five points in a row are more than 1 standard deviation from the mean in the same direction. |

Individual Nelson Rule 7 | Individual | Fifteen points in a row are all within 1 standard deviation of the mean on either side of the mean. |

Individual Nelson Rule 8 | Individual | Eight points in a row exist, but none within 1 standard deviation of the mean, and the points are in both directions from the mean. |

Individual Outside | Individual | A single sample point outside the defined control limits. |

Median Nelson Rule 1 | Median | One point is more than 3 standard deviations from the mean. |

Out Of Limits | XBar | XBar above 'XBar UCL' or below 'XBar LCL' control limits (those control limits must be set for this signal to work). |

Outside Limits | Range | Range above 'Range UCL' or below 'Range LCL' control limits (those control limits must be set for this signal to work). |

WE Zone Rule 1 | XBar | Any single data point falls outside the 3σ limit from the centerline (i.e., any point that falls outside Zone A, beyond either the upper or lower control limit). |

WE Zone Rule 2 | XBar | Two out of three consecutive points fall beyond the 2σ limit (in zone A or beyond), on the same side of the centerline. |

WE Zone Rule 3 | XBar | Four out of five consecutive points fall beyond the 1σ limit (in zone B or beyond), on the same side of the centerline. |

WE Zone Rule 4 | XBar | Eight consecutive points fall on the same side of the centerline (in zone C or beyond). |

XBar 8 Above Control Line | XBar | Eight Consecutive points above control line signal calculation. |

XBar 8 Below Control Line | XBar | Eight Consecutive points below control line signal calculation. |

XBar Nelson Rule 1 | XBar | One point is more than 3 standard deviations from the mean. |

XBar Nelson Rule 2 | XBar | Nine (or more) points in a row are on the same side of the mean. |

XBar Nelson Rule 3 | XBar | Six (or more) points in a row are continually increasing (or decreasing). |

XBar Nelson Rule 4 | XBar | Fourteen (or more) points in a row alternate in direction, increasing then decreasing. |

XBar Nelson Rule 5 | XBar | Two (or three) out of three points in a row are more than 2 standard deviations from the mean in the same direction. |

XBar Nelson Rule 6 | XBar | Four (or five) out of five points in a row are more than 1 standard deviation from the mean in the same direction. |

XBar Nelson Rule 7 | XBar | Fifteen points in a row are all within 1 standard deviation of the mean on either side of the mean. |

XBar Nelson Rule 8 | XBar | Eight points in a row exist, but none within 1 standard deviation of the mean, and the points are in both directions from the mean. |

c Nelson Rule | c | One point is more than 3 standard deviations from the mean (Nelson Rule 1). |

np Nelson Rule 1 | np | One point is more than 3 standard deviations from the mean (Nelson Rule 1). |

p Nelson Rule | p | One point is more than 3 standard deviations from the mean (Nelson Rule 1). |

u Nelson Rule | u | One point is more than 3 standard deviations from the mean (Nelson Rule 1). |