Difference Between Control Chart And Pre Control Chart
Control charts and pre control charts are statistical tools that are used in quality control. They help managers to identify and correct errors in a production process. However, these two charts are different in terms of their purpose, usage, and application. This article will explain the difference between control chart and pre control chart.
Control Chart
A control chart is a graphical representation of a process that helps managers to monitor the quality of a product or service. It is used to track the variation in a process over time and identify any changes that occur. Control charts are based on statistical data and are used to determine whether a process is stable or not. They help managers to identify the source of variation in a process and take corrective action if necessary.
Control charts have several advantages. They help managers to:
- Monitor process performance over time
- Detect changes in a process
- Identify the source of variation in a process
- Take corrective action when necessary
Control charts are commonly used in manufacturing, healthcare, and service industries. They are particularly useful in industries where quality is critical, such as aerospace, healthcare, and automotive industries.
Pre Control Chart
A pre control chart is a tool that is used to monitor the quality of a product or service during the production process. It is used to check whether a process is within the acceptable range of variation. Pre control charts are based on visual inspection and are used to detect errors in a process before they occur.
Pre control charts have several advantages. They help managers to:
- Monitor process performance in real-time
- Detect errors in a process before they occur
- Take immediate corrective action
- Reduce waste and improve efficiency
Pre control charts are commonly used in industries where the production process is not well-established or where the quality of the product or service is critical. They are particularly useful in the food industry, where the quality of the product can affect the health of the consumer.
Key Differences Between Control Chart and Pre Control Chart
The key differences between control chart and pre control chart are as follows:
- Purpose: Control charts are used to monitor the quality of a product or service over time and identify the source of variation in a process. Pre control charts are used to monitor the quality of a product or service during the production process and detect errors before they occur.
- Usage: Control charts are based on statistical data and are used to determine whether a process is stable or not. Pre control charts are based on visual inspection and are used to detect errors in a process before they occur.
- Application: Control charts are commonly used in manufacturing, healthcare, and service industries. Pre control charts are commonly used in industries where the production process is not well-established or where the quality of the product or service is critical.
Conclusion
Control charts and pre control charts are both useful tools in quality control. They help managers to monitor the quality of a product or service and identify errors in a production process. However, they have different purposes, usage, and application. Control charts are used to monitor the quality of a product or service over time, while pre control charts are used to monitor the quality of a product or service during the production process. Understanding the difference between these two charts is essential for effective quality control.
