What is a control chart and why do we want to use them?
What will be an ideal response?
Control Chart—a simple tool designed to quantitatively monitor important characteristics of a process. It is a picture that allows us to see what changes have occurred over a period of time, and to study the impact of various factors in the process that change. When properly used, it prevents us from reacting when we do not need to react and it will allow us to react when we need to react.
Control charts are designed to:
• achieve higher effective capacity
• identify appropriate adjustments
• Distinguish special from common causes of variation
• identify control problems
• achieve; higher quality
• achieve lower unit cost
• Establishes a common language for discussing process performance
• Determine if a process will meet or exceed customer expectations
• Determine if a production change is needed
• Provide foundation for operational decisions
• Identify and establish sampling procedures
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What would be the result of the following MATLAB commands?
F1x = sym('x^2-25'); solve(F1x)