Final answer:
Statistical Process Control (SPC) utilizing control charts is the most preferred method for ensuring process control by distinguishing between random and controlled variations.
Explanation:
Statistical Process Control (SPC) is the most preferred method of ensuring process control. This method employs statistical methods to monitor and control a process by distinguishing between random and controlled variations in a system. By utilizing control charts to monitor process performance over time, companies can identify sources of variation that could be reduced to enhance the process.
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