---
alias: user-guide-spc-nelson6
description: "Defines a rule based on statistical deviation from a centerline for chart analysis"
---

# Nelson 6

## Rule definition

4 of 5 consecutive points above one standard deviation or below one standard deviation on the same side of the centerline.

## Rule Scope

| Indicator Scope | Scope Type | Chart Type | Chart |
|-----------------|------------|------------|-------|
| Indicator1      | ChartType  | Variable   |       |

Table: Nelson 6 configuration used for scope resolution

## Visual examples

### Upper

![Nelson 6 - Upper][N6_WE3_indicator1_upper]

### Lower

![Nelson 6 - Lower][N6_WE3_indicator1_down]

[N6_WE3_indicator1_upper]: images/N6_WE3_indicator1_upper.png
[N6_WE3_indicator1_down]: images/N6_WE3_indicator1_down.png