Adding, multiplying, and performing similar mathematical operations in one's head can be difficult tasks, even for the most skilled mathematics students. By estimating, however, basic operations are easier to calculate mentally. This can make...

Estimation is the calculated approximation of a result which is usable even if input data may be incomplete, uncertain, or noisy. In statistics, see estimation theory, estimator. In mathematics, approximation or estimation typically means finding upper...

China's recently lowered AIDS estimates are probably accurate since they are in line with other countries which have scaled back their numbers because of a change in the way data are collated, a leading AIDS researcher said Thursday.China's leaders had denied AIDS was a problem...

Mayor Michael Bloomberg is apparently even richer than anyone realized. Forbes magazine's annual list of richest Americans is estimating his wealth at twice the number it gave last year, vaulting him to the rank of 25 with a fortune estimated at $11.5 billion.Last year, he...

President Bush's proposed federal budget is based on too-rosy revenue estimates and would probably not produce its advertised surplus of $61 billion in five years, according to new estimates from the Congressional Budget Office.Instead, Bush's February budget plan would produce a $9 billion deficit by...

A leading industry analyst on municipal wireless projects is revising its 2007 spending estimates as cities find their projects costing more and drawing less interest from residential customers than expected.In an annual State of the Market Report, MuniWireless estimates U.S. expenditures at $329 million for...