---
alias: user-guide-spc-nelson8
description: "Defines a specific geometric rule for identifying patterns within charts and data"
---

# Nelson 8

## Rule definition

8 consecutive points without any point within one standard deviation on either side of the centerline.

## Rule Scope

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

Table: Nelson 8 configuration used for scope resolution

## Visual examples

### Indicator 1

![Nelson 8 - Indicator 1][N8_indicator1]

[N8_indicator1]: images/N8_indicator1.png