How Do You Create A Statistical Process Control Chart?
A statistical process control chart is used in manufacturing to evaluate the output or activity of a particular process or work flow and determine if the process is in control or not. In control means current data is an accurate source of future predictions. Out of control indicates that there is an error in the current process than needs correction. Identify a manufacturing process or work flow where the product is measured at regular intervals. Good processes to select are those where the output must fall within a predetermine range to be acceptable. Evaluation of the work output against a standard evaluation matrix is required for the results to be of any value. An example would be the power output of 40 watt light bulbs. Calculate the upper control limit, center line and lower control limit. The upper and lower control limits should be the outer limits of acceptable product control. The control line should be in the exact center of the upper and lower control limits, usually within
