The world of microeconomics and business decision-making hinges upon a key concept: marginal cost. In the simplest terms, marginal cost represents the expense incurred to produce an additional unit of ...

Andrew Black works for the University of Adelaide. He is an Associate Investigator in the ARC Center of Excellence for Mathematical and Statistical Frontiers (ACEMS). He receives funding from the ARC, ...

More than 2,000 years ago, pretty much every educated human knew the Earth was round. There are some pretty obvious clues, after all. If you travel south, you see stars and constellations you’ve never ...

Mean radius is the average measurement from the true center of the group (white) to the center of each shot. More simply, it's the average "miss distance." Group size, not mean radius, has been the ...

James Chen, CMT is an expert trader, investment adviser, and global market strategist. Somer G. Anderson is CPA, doctor of accounting, and an accounting and finance professor who has been working in ...