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What is the goal of statistical process control (SPC)?

  1. To develop better marketing strategies

  2. To boost employee productivity

  3. To monitor and adjust operations using statistical techniques

  4. To evaluate customer satisfaction

The correct answer is: To monitor and adjust operations using statistical techniques

Statistical process control (SPC) is fundamentally aimed at monitoring and controlling a process through the use of statistical methods. The goal is to ensure that the process operates efficiently, producing more specification conforming products with less waste (rework or scrap). By continuously monitoring process performance data, SPC helps identify variations in the process, which can signify issues that need addressing, allowing for timely adjustments to maintain optimal operation. This approach relies on control charts, process capability analysis, and other statistical techniques to analyze data over time. These tools enable organizations to gain insights into process stability and performance, ultimately leading to improved quality and efficiency in production or service delivery. Consequently, the ability to identify and correct issues before they lead to defects or deviations is a key aspect of SPC's contribution to operational excellence. In contrast, developing better marketing strategies, boosting employee productivity, or evaluating customer satisfaction, while important aspects of business operations, do not directly pertain to the statistical monitoring and adjustment of operational processes, which is the essence of SPC.