explain the different types of control chart
Answers
Answer:
Types of Control Charts
Control charts fall into two categories: Variable and Attribute Control Charts.
Explanation:
Types of Control Charts
Control charts fall into two categories: Variable and Attribute Control Charts.
Variable data are data that can be measured on a continuous scale such as a thermometer, a weighing scale, or a tape rule.
Attribute data are data that are counted, for example, as good or defective, as possessing or not possessing a particular characteristic.
The type of control chart you use will depend on the type of data you are working with.
It is always preferable to use variable data.
Variable data will provide better information about the process than attribute data.
Additionally, variable data require fewer samples to draw meaningful conclusions
Answer:
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. It is more appropriate to say that the control charts are the graphical device for Statistical Process Monitoring (SPM). Traditional control charts are mostly designed to monitor process parameters when underlying form of the process distributions are known. However, more advanced techniques are available in the 21st century where incoming data streaming can-be monitored even without any knowledge of the underlying process distributions. Distribution-free control charts are becoming increasingly popular.