Question

State any two disadvantages of variable control chart.

Answer 1

Control charts, also known as Shewhart charts (after Walter A. Shewhart) or process-behavior charts, are a statistical process control tool used to determine if a manufacturing or business process is in a state of control.

Control chart

Xbar chart for a paired xbar and R chart.svg

One of the Seven Basic Tools of Quality

First described by

Walter A. Shewhart

Purpose

To determine whether a process should undergo a formal examination for quality-related problems

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