Evaluation of the PLC's performance


Frequency Percent Valid Percent Cumulative Percent
Valid Positive 317 37.7 41.5 41.5
Neutral 162 19.3 21.2 62.8
Negative 284 33.8 37.2 100.0
Total 763 90.8 100.0
Missing System 77 9.2

Total 840 100.0