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PICK charts are a method to prioritize a number of action items or problem solving ideas. A pick chart allows visual comparison of action items relative to their impact to the problem being addressed vs. the ease/cost of implementation. In VERY rudimentary terms, PICK charts are a Return On Investment (ROI) method.
The resulting plots are analyzed as for other control charts, using the rules that are deemed appropriate for the process and the desired level of control. At the least, any points above either upper control limits or below the lower control limit are marked and considered a signal of changes in the underlying process that are worth further ...
Control charts are graphical plots used in production control to determine whether quality and manufacturing processes are being controlled under stable conditions. (ISO 7870-1) [1] The hourly status is arranged on the graph, and the occurrence of abnormalities is judged based on the presence of data that differs from the conventional trend or deviates from the control limit line.
A control chart can be useful during the Control stage to assess the stability of the improvements over time by 1. serving as a guide to continue monitoring the process and 2. providing a response plan for each of the measures being monitored in case the process becomes unstable. Standard operating procedures (SOP's) and Standard work
Simple example of a process control chart, tracking the etch (removal) rate of Silicon in an ICP Plasma Etcher at a microelectronics waferfab. [1] Time-series data shows the mean value and ±5% bars. A more sophisticated SPC chart may include "control limit" & "spec limit" % lines to indicate whether/what action should be taken.
Six Sigma (6σ) is a set of techniques and tools for process improvement.It was introduced by American engineer Bill Smith while working at Motorola in 1986. [1] [2]Six Sigma strategies seek to improve manufacturing quality by identifying and removing the causes of defects and minimizing variability in manufacturing and business processes.
It is a lean process improvement tool that stands for Sort, Set in Order (aka Straighten or Stabilize), Shine (aka Scrub or Sweep), Standardize, Sustain, Safety. 6S can be the shortened form of Six Sigma; iPhone 6S, a smartphone by Apple, Inc. 6S, the production code for the 1984 Doctor Who serial The Twin Dilemma
Download as PDF; Printable version; In other projects Wikidata item; Appearance. move to sidebar hide. Sigma level may refer to a: measurement of defects in the ...