Statistical process control (SPC) charts are crucial for process stability, especially with improved data collection. Introduced by Walter Shewhart in the 1920s, SPC uses random samples to estimate statistics and assess variation. With better data availability, techniques like the Rbar method, which estimates standard deviation using subgroup ranges, need reevaluation.
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ComplianceQuest provides enterprises with a unified suite of cloud-based applications for quality management, supplier management, customer and field service quality, as well as health and safety.