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in this 1925 drawing by Shewhart, he advocates performing quality control multiple times throughout the manufacturing process. This clearly increases the time and cost of quality control. Why is this considered better than only testing once at the end of the process?
Shewhart is known for beginning the iterative process.
The use of statistical quality control adds value.
Customers will see the multiple iterations of testing and have greater satisfaction.
Quality problems are detected earlier in the process which leads to lower costs and higher quality output.
Expert Answer
Option D (last option) is the correct answer i.e. at each step quality issues
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