ControlRuleSets.NelsonStandard Property

public static ControlRuleSet NelsonStandard { get; }

Public Shared ReadOnly Property NelsonStandard As ControlRuleSet
	Get

public:
static property ControlRuleSet^ NelsonStandard {
	ControlRuleSet^ get ();
}

static member NelsonStandard : ControlRuleSet with get

Property Value

The Nelson rules evaluated are:

1. Nelson 1: one point beyond 3-sigma.
2. Nelson 2: nine or more points on the same side of the center line.
3. Nelson 3: six or more points continuously increasing or decreasing.
4. Nelson 4: fourteen or more points alternating up and down.
5. Nelson 5: two out of three consecutive points beyond 2-sigma on the same side.
6. Nelson 6: four out of five consecutive points beyond 1-sigma on the same side.
7. Nelson 7: fifteen or more points within 1-sigma of the center line on either side.
8. Nelson 8: eight or more points on both sides of the center line with none within 1-sigma.

Exact tie-handling and zone-boundary conventions are documented in the implementation and applied consistently across all overloads.

Reference