A good secretary in real life has an error rate of about one per page.

The error rate is down to 2.5 percent, he said.

By contrast, the error rate in 1999 was 8 percent.

That added to the error rate, which increased the cost.

In my opinion, we should be able to have a 1% error rate within a number of years.

The error rate was found to be six times higher than previously reported.

In half the years studied, including the most recent one, the error rate was over 60 percent.

The error rate was supposed to be very low, something like one in a thousand.

By last week, the error rate had been reduced to 90 parts per million.

Put another way, the error rate was 20% when subjects expected it to be 0%.