Quality Control. Quality Foundations. To move to Quality means different things to different people. Quality - The processes and tools used to measure and record the degrees of quality achieved in production.
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The four statements that define his quality framework:
In addition to this he introduced the concepts of:
The quality process involves four major elements:
Based on Normal statistical distribution (variation from mean is predictable)
Data is collected to calculate means and standard deviations
SD are used to set Upper and Lower acceptable limits
Variable characteristics are specified by the designer as a normal value ( target ) and a tolerance about the target (variability)
Histograms are used to produce and display the different values and help approximate its normal distribution.