But calculating the average probability for a group is much easier than calculating the same probability for any individual.

ECONOMIST: Crime prediction

What product models should be collapsed together and treated as a single model for purposes of calculating average prices?

FORBES: Protectionist Antidumping Regime is a Pox on America's Glass House

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

Instead, in March 2013 it will launch an additional index called RPIJ, a new version of the RPI index but using the same methods as CPI for calculating average prices.

BBC: Q&A: Inflation changes

Which sales should be included in calculating average prices?

FORBES: Protectionist Antidumping Regime is a Pox on America's Glass House

The statistic is computed by calculating the average number of putts a PGA TOUR player is expected to take from every distance, based on ShotLink data from the previous season.

FORBES: PGA Tour Unveils New Putting Statistic

To appreciate the affront to fairness and mathematical integrity that zeroing represents, recall that antidumping duty rates are determined by calculating a weighted average dumping margin, which derives from individual dumping margins calculated for multiple comparisons.

FORBES: Protectionist Antidumping Regime is a Pox on America's Glass House

Gross domestic income, or the money earned by the people, businesses and government agencies whose purchases go into calculating growth, rose at an average 2.8% annual rate from April through September after climbing 4.3% in the previous six months, according to Commerce Department data released on Nov. 22.

FORBES: Have American Shoppers Lost Their Minds?

The authors propose closing this loophole by calculating benefits for immigrants based on their average wages while in the United States.

ECONOMIST: Save Social Security? Here��s a thought