The objective of the statistical process control (spc) system is to
a. assess customer expectations.
b. provide a statistical signal when natural causes of variation are present.
c. provide a statistical signal when assignable causes of variation are present.
d. eliminate natural variations.

Option C: Provide a statistical signal when assignable causes of variation are present.

Explanation:

Statistical process control system is defined as the method of quality control during manufacturing process. It is an industry standard methodology which help in ensuring that processes are operating efficiently. This process can be applied to any process in which there is a need to measure the product meeting specification output. This control system include tools like run charts, design of experiments, controls charts and focus on steady and continuous improvement.

Statistical process system should take place in two phases:

An advantage of this control system over other methods of quality control is that it's primary focus is on the early prevention of the problem rather than correcting it when the problem has taken place.

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