Control Chart Generator

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Process Control Chart

10.69210.52510.1909.8559.68812345678910Sample NumberValue (mm)LegendCenter LineControl Limits (±3σ)Warning Limits (±2σ)In Control PointsOut of Control PointsTrending Points

Control Limits

UCL: 10.6924

Center Line: 10.1900

LCL: 9.6876

σ (MR̄ ÷ 1.128): 0.1675

Process Status

Status:In Control

Out of Control: 0 points

Trending: 0 points

Data Summary

Sample Size: 10

Range: 0.4000

Mean: 10.1900 mm

Control Chart Rules & Interpretation

Out of Control Signals:

  • Any point beyond control limits (±3σ)
  • 9+ consecutive points on one side of center line
  • 2 of 3 consecutive points beyond warning limits (±2σ), same side
  • Unusual patterns or trends

Process Capability:

  • Cpk ≥ 1.33: Excellent capability
  • Cpk ≥ 1.0: Adequate capability
  • Cpk < 1.0: Poor capability
  • Cp: Potential capability (centered process)
ReliabilityCalc