Most people can be above average when we use average to mean the arithmetical mean.

BBC: Go Figure: The great business confidence gap

The estimate also contained an arithmetical error which significantly increased estimated construction rates.

BBC: New Homes Bonus needs better scrutiny, say MPs

Mr Netanyahu was determined to bring Mr Barak in, so as to escape the political and arithmetical thrall of his own hardliners.

ECONOMIST: The new politics of Israel's foreign policy

One of my loose wires has to do with arithmetical computation.

NPR: Living With an Inability to Do Math

But in fact, the main reason for the two indices rising at different rates is because they use different arithmetical methods for calculating average prices.

BBC: New inflation measure proposed

Nathalie Tzourio-Mazoyer at the University of Caen, in France, and her colleagues, measured the brain activity of a maths prodigy as he performed some feats of arithmetical acrobatics.

ECONOMIST: Who wants to be a genius?

But their credibility problem is not arithmetical.

ECONOMIST: Bagehot