What is Control chart?

A chart that plots process measurements over time against a center line and control limits (usually ±3σ) to judge whether the process is stable. Points outside the limits or runs on one side signal problems.

Field: Yield and quality control

Control chart in the explanations

Questions that mention Control chart (4)

  1. In a control chart, which is an example that should be judged abnormal even though all points are within the control limits?
  2. Which control chart is used to control the fraction defective?
  3. Which correctly describes the difference between the control limits of a control chart and a product's specification limits?
  4. Which control chart monitors shifts in a process's mean and changes in its spread at the same time by plotting each sample group's mean and range (max − min) over time?

Related terms

APC (advanced process control) Cause-and-effect diagram FMEA (failure mode and effects analysis) Killer defect Pareto chart Poisson yield model Process capability index (Cpk) SPC (statistical process control) Systematic defect Yield

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