🤔SPC Interview Questions and Answers | Statistical Process Control | Part - 2🔥

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[@roronoazoro28777]

Love your detailed and informative content!

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[@kishanshrotriya6071]

Valuable information 👍

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[@mukulpunn3998]

Can Ppk be greater than Cpk? in one of your videos you mentioned the industry standard for Ppk is 1.67 and Cpk is 1.33. Pls explain. Thanks

[@QualityHUBIndia]

Yes, Ppk (Process Performance Index) can be greater than Cpk (Process Capability Index). Cpk is calculated using short-term variability (within-subgroup variation) and assumes the process is stable and in control. Ppk, however, uses overall variability, including shifts or drifts. If the process shows minimal variation over time, Ppk can exceed Cpk, reflecting better performance than initial capability estimates.

[@manojprajapati9691]

Sir what is the difference between control chart and SPC

[@QualityHUBIndia]

The difference between a Control Chart and Statistical Process Control (SPC) lies in their scope and application within quality management: Control Chart Definition: A Control Chart is a specific tool used to monitor the stability and performance of a process over time. It graphically represents process data against control limits (Upper Control Limit and Lower Control Limit) to detect variations. Purpose: To determine whether a process is in a state of statistical control (predictable and consistent). Focus: Tracks individual data points and highlights abnormal patterns or trends (e.g., outliers, shifts, or cycles). Example: X-bar and R Chart, p-chart, c-chart, etc. Statistical Process Control (SPC) Definition: SPC is a broader methodology that uses statistical tools to monitor, control, and improve processes. Control Charts are one of these tools. Purpose: To reduce variability, improve process capability, and achieve consistent quality. Focus: Encompasses various techniques, including Control Charts, Process Capability Analysis, Histograms, and Pareto Analysis, to maintain and improve processes. Example: Applying Control Charts, conducting Root Cause Analysis, and ensuring corrective actions for continuous improvement.

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Kitna pay kerna h

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