The following is an example of how the evaluation of a group of engineers can be presented, trying to prepare documentation for new industrial equipment. The number of document revisions that must be performed before documents are approved for use is reported:
UCL = Upper Control Limit; LCL = Lower Control Limit
All values are within the control limits and this means that the group of engineers will consistently, if a salary increase is to be given at the end of the year, given to all or none. If there had been a person with performance out of control limits, specific action on the person would have been appropriate but this is not the case.