Search results
Results from the WOW.Com Content Network
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.
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
x̅ and R chart. x̅. and R chart. In statistical process control (SPC), the and R chart is a type of scheme, popularly known as control chart, used to monitor the mean and range of a normally distributed variables simultaneously, when samples are collected at regular intervals from a business or industrial process. [1]
Shewhart individuals control chart. In statistical quality control, the individual/moving-range chart is a type of control chart used to monitor variables data from a business or industrial process for which it is impractical to use rational subgroups. [1] The chart is necessary in the following situations: [2]: 231.
File:ControlChart.svg. Size of this PNG preview of this SVG file: 520 × 244 pixels. Other resolutions: 320 × 150 pixels | 640 × 300 pixels | 1,024 × 480 pixels | 1,280 × 601 pixels | 2,560 × 1,201 pixels. This is a file from the Wikimedia Commons. Information from its description page there is shown below.
x̅ and s chart. x̅. and s chart. In statistical quality control, the and s chart is a type of control chart used to monitor variables data when samples are collected at regular intervals from a business or industrial process. [1] This is connected to traditional statistical quality control (SQC) and statistical process control (SPC).
File:Rule 7 - Control Charts for Nelson Rules.svg. Size of this PNG preview of this SVG file: 360 × 260 pixels. Other resolutions: 320 × 231 pixels | 640 × 462 pixels | 1,024 × 740 pixels | 1,280 × 924 pixels | 2,560 × 1,849 pixels. This is a file from the Wikimedia Commons. Information from its description page there is shown below.
c-chart. In statistical quality control, the c-chart is a type of control chart used to monitor "count"-type data, typically total number of nonconformities per unit. [1] It is also occasionally used to monitor the total number of events occurring in a given unit of time. The c-chart differs from the p-chart in that it accounts for the ...