A Cumulative Sum Control Chart (CUSUM) is a sequential analysis technique used in quality control to detect shifts in the process mean or variability by plotting the cumulative sum of deviations from a target value. It is particularly effective in identifying small and persistent changes that might be missed by other types of control charts, making it a powerful tool for process improvement and monitoring.

Cumulative Sum Control Chart

CUSUM

sequential analysis technique

Quality control is a systematic process designed to ensure that products and services meet specified requirements and are consistent in quality. It involves the use of various techniques and tools to monitor, assess, and improve production processes, thereby minimizing defects and variations.

quality control

shifts in the process mean

Shifts in variability

cumulative sum of deviations

target value

identifying small and persistent changes

other types of control charts

powerful tool for process improvement

Process monitoring is a continuous activity that involves observing and analyzing the performance of a process to ensure it operates within desired parameters and achieves its objectives. It is essential for identifying inefficiencies, ensuring quality control, and enabling timely interventions to prevent deviations from expected outcomes.

Process Monitoring

Relevant Degrees

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