This open package aimed to addresses frequency distribution, run-chart, X-chart, R-chart, X-bar and S-chart, R-bar and R-chart, X and MR-chart, standard deviation, Control limits, Process Capability, p and np type charts, c and u type charts.
The application of statistical methods and procedures relative to a process and a given set of standards.
a method used to determine whether variation in a process is normal or abnormal. A decision can then be made whether to adjust the process.
A managerial control technique that examines a process's inherent variability.
The application of statistical techniques to control a process. The term "statistical quality control" is often used interchangeably with "statistical process control."
The use of statistical techniques as a means of controlling the quality of a product or process.
The ongoing measurement of a production process by providing charts, maps and other displays of specified key attributes. Observed data is compared with preset control limits and other parameters to designate process output as acceptable or not.
A quality control methodology which focuses on continuous monitoring and plotting on charts of quality levels during the production process itself rather than post-production inspection of the items produced. The intent is to produce no defective items. By recording quality results on a chart, at frequent regular intervals, trends toward defective production can be spotted. By stopping the process before it drifts out of control, and making necessary corrections, no defective parts will be produced. The machine operator then becomes his own quality inspector.
Use of variation analysis, with manual or computerized control charts, to detect irregular variations in a process as quickly as possible. Often, SPC charts display upper and lower limits for part characteristics or process parameters and show trends over time, indicating when the limits are exceeded (or are about to be exceeded) and corrective actions are needed. In some closed-loop systems, adjustments are made automatically when readings indicate that a control limit is being approached.
A quality control method to continuous monitor a process rather than inspection of a finished product, with the intent to achieve control of the process and eliminate defective product.
The application of statistical methods to analyze data, study and monitor process capability and performance.
A philosophy, system, and set of specific techniques for controlling and improving production and service processes.
A technique for keeping a process within specified performance limits by measurement, statistical analysis, and feedback. SPC is often used along with Design Of Experiments (DOE) to improve yield and provide other enhancements to a microelectronics fabrication line.
A method to ensure consistent manufacturing results. Machines are used to analyze variation in tablets. If a tablet does not fall within an acceptable range, it is automatically rejected.
Method used by printers to ensure quality and delivery times specified by customers. Abbreviated SPC.
an informative inspection technique that uses sampling and control charts to determine if production processes are stationary and to indicate when shifts or changes are likely to have occurred in the process.
A standardising technique used for steering a process in a desired direction, reducing variation, increasing knowledge about the process, assessing process capability and providing performance benchmarks
The application of statistical techniques for measuring and analyzing the variation in processes.
An analysis of a process through the use of statistical techniques that indicate whether the process is operating within appropriate control limits. SPC is used to monitor the quality of processes and products.
Analysis and control of a process through the use of statistical techniques, particularly control charts.
A mathematical procedure for measuring and tracking the variability in a manufacturing process; developed by Shewhart in the 1930's and applied by Deming in TQM.
Statistical process control is the application of statistical methods to analyze and control the variation of a process.
Discipline involving statistical techniques to identify and control causes of variation in a process.
(n) The system used for the selection of parts that are then measured for accuracy. Mathematical statistics is the tool used to analyze the measurements of the randomly selected parts. Consistent and accurate measurements will indicate when a machine tool must be maintained or adjusted during the manufacturing cycle.
Statistical process control (SPC) is a method for achieving quality control in manufacturing processes. It employs control charts to detect whether the process observed is under control.