ControlRuleSets.Nelson Property

public static ControlRuleSet Nelson { get; }

Public Shared ReadOnly Property Nelson As ControlRuleSet
	Get

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

static member Nelson : ControlRuleSet with get

Property Value

The Nelson rule set is the standard full-sensitivity rule set for variables control charts (Individuals, XBar-R, XBar-S). It applies all eight Nelson rules:

• PointBeyondControlLimits — one point strictly beyond ±3σ (window length 1).
• ConsecutivePointsOnSameSide(Int32) with run length 9 — nine consecutive points on the same side of the center line (window length 9).
• ConsecutiveIncreasingOrDecreasing(Int32) with run length 6 — six consecutive points continuously increasing or decreasing (window length 6).
• AlternatingUpDown(Int32) with run length 14 — fourteen consecutive points alternating up and down (window length 14).
• TwoOfThreeBeyondTwoSigmaSameSide — two out of three consecutive points beyond ±2σ on the same side (window length 3).
• FourOfFiveBeyondOneSigmaSameSide — four out of five consecutive points beyond ±1σ on the same side (window length 5).
• FifteenWithinOneSigma — fifteen consecutive points within ±1σ of the center line (window length 15).
• EightOutsideOneSigma — eight consecutive points on both sides of the center line, none within ±1σ (window length 8).

Intended for variables charts with stable sigma interpretation. Do not apply to EWMA or CUSUM statistics; use BasicShewhart instead.

Reference