Explain in detail the control chart and its application
Answers
Answer:
The control chart is a graph used to study how a process changes over time. Data are plotted in time order. A control chart always has a central line for the average, an upper line for the upper control limit and a lower line for the lower control limit. These lines are determined from historical data.
Nor should a control chart be used alone. There are always other process improvement tools that should be used along with control charts. A control chart is used to monitor a process variable over time.
Types of Control Charts.
•X Bar Control Chart. Information and training presentation on statistical methods of product and process analysis and improvement. ...
•Range R Control Chart. ...
•Standard Deviation S Control Chart. ...
•p and np Control Charts. ...
•PreControl Charts.
The mean is calculated by adding up all the measurement points and then dividing by the total number of measurement points. A control chart has upper and lower control limits shown as horizontal lines across the chart. These lines are used when identifying special causes.
UCL represents upper control limit on a control chart, and LCL represents lower control limit. ... The UCL and LCL on a control chart indicate whether any variation in the process is natural or caused by a specific, abnormal event that can affect the quality of the finished product.
This article throws light upon the two main types of control charts. The types are: 1. Control Charts for Variables 2. Control Charts for Attributes.
Step-by-step explanation:
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