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.

answer; (d) anthropology;

every society, in order to meet the needs of it's people, has to answer three basic questions:

- what should we produce?

- how should we produce it?

- for whom should we produce it?

this questions must be answered in order to, option b, aid in production decisions.

every country can't produce everything, no matter how rich their land is. it may be a matter of technology, resources or geographical conditions. so, these three questions must be resolved in order to get the most of the production of each land.

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