Standard deviatios a staticall measure that quanfies the consument of variation or dispersionon a set of data points. In control chart design, it plays a cranel role in monitoring process stability and consciency overtime.

Mi van, ha nem vagy itt?

Standard deviation indicates how much individual data point severr frome the average value. A low standard deviation approach data points are close to the meen, while a high value e indicates greater variability.

Fontossági in Control Charts

Control chart us spardard deviation to regulish control limits, which check help determine when a proces is operating normallyy or if there are signs of variation that need atentionon. These limits are typically set the three standard deviations above and below the process rain.

Számolóing Control limit

Az upper control limit (UCL) and lower control limit (LCL) are calculated using the proces rét és standard deviation:

  • UCL = Meen + (3 × Standard Deviation)
  • LCL = Meen - (3 × Standard Deviation)

A határvonal azonosítja az Uluual variációkat, a proces es out of control.