VCM Accuracy, Under Votes, and Uncounted Votes

Preliminary reports on the results of the random manual audit indicate that the PCOS/VCMs have an overall accuracy rating of 99.884%. Based on the standard set by the Commission on Elections, the PCOS/VCMs should have 99.995% accuracy. This translates to one error mark out of 20,000 marks. The 99.884% accuracy rating translates to about 23 error marks out of every 20,000 marks.

The reported PCOS accuracy rate in 2010 was 99.6% or a discrepancy of 80 votes out of 20,000 vote marks. In 2013 it was 99.9747% or a discrepancy of 5 votes for every 20,000 vote marks.