The Circular error probable was also reduced from 550 metres to 150-450 meters.

For a start, the media could ignore any news release that mentioned the words "probable error."

I don't know what the percentage of probable error would be in this case, but the magnitude is striking.

Before this deviations exceeding three times the probable error were considered significant.

For a symmetrical distribution the probable error is half the interquartile range.

The probable error is computed from the observations made, and is used to express their degree of accuracy.

Some of the ancient sequences obtained have highly probable errors, and proper control to avoid contamination.

The jobless rate was down a hair to 6.7 percent in September (well within the reach of probable error.)

Accuracy: Circular error probable of 50 m or less.

Any violent necessity is usually the result of something having gone wrong, a probable error of judgment.