How statistics is applied in quality engineering in general

How statistics is applied in quality engineering? ( in general )

How statistics is applied for quality engineeringin Electronics and Electrical Engineering?

Solution

the major applications are
statistical process control, design of experiments, and (to a lesser extent) acceptance sampling. In addition to these tech-niques, a number of other statistical and analytical tools are useful in analyzing quality problems and improving the performance of processes.Out of them
1) A control chart is one of the primary techniques of statistical process control (SPC). This chart plots the averages of measurements of a quality characteristic in samples taken from the process versus time (or the sample number).
2) A designed experiment is extremely helpful in discovering the key variables influencing the quality characteristics of interest in the process.
3) The factorial design wherefactors are varied together in such a way that all possible combinations of factor levels are tested.So
The introduction of statistical process control will stabilize the process and reduce the variability. However, it is not satisfactory just to meet requirements—further reduc- tion of variability usually leads to better product performance and enhanced competitive position. Statistically designed experiments can be employed in conjunction with statistical process monitoring and control to minimize process variability in nearly all industrial settings.
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