"We know at this level the difference is error and until we cut them out in our game, that's going to be difficult to get results, " Rees said.

BBC: Captain Matthew Rees urges Wales to cut out mistakes

The difference between them is not large, and there's a big margin for error.

BBC: President Hollande and the IMF

Often, the difference between gross income and adjusted gross income comes to little more than a rounding error.

FORBES: Magazine Article

There was little difference in how Democrats and Republicans responded to the poll, which had a sampling error of plus-or-minus 3 points.

CNN: SHARE THIS

Within statistical error, under almost all testing conditions, I cannot find a difference between dunking and not dunking under controlled circumstances , so do it how you want.

FORBES: Does Bouncing Your Tea Bag Actually Do Anything Substantial?