Unformatted text preview: series of observa±ons. If we get a consecu±ve series of plots outside the limits or all below/above the central line, the process needs to be inves±gated for cause of sustained poor performance. Similarly, if a series of plots are trending in one direc±on, it needs to be inves±gated for cause of progressive change. ²hus consecu±ve observa±on points have signiFcance in process control. 6.What is a run? How are run charts useful in process control? a. Run : Sequence of observa±ons with a certain characteris±c. b. A run chart can be used to track the values of a variable over ±me. ²his can aid in iden±fying trends or other paTerns that may be occurring. Important advatages of run charts are ease of construc±on and ease of interpreta±on...
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- Spring '16
- KIM social
- Control Chart, Limit of a sequence