Analyzing the data through process control charts is an essential step in understanding the process control. If data points are within the upper and lower control limits of the process, no matter how scattered they present, this means the following

Multiple Choice

• the data points nees to be recalibrated and more points needs to be pulled into the analysis for a definitive conclusion

• the process is under control and the scattering of the data points indicates normal process variation ("noise"). Everything is under control and the data set can be relied upon.

• the process is sometimes in control and sometimes out of control

• the process is erratic and cannot be relied upon