Statistical Terms Glossary

Refers to an organism that has a single reproductive season and then dies.

Consists of cokes produced by low temperature carbonization.

Is a device that uses a semiconductor (usually silicon or germanium) to detect traversing charged particles or the absorption of photons. In the field of particle physics, these detectors are usually known as silicon detectors.

It is an aquifer whose upper and lower boundaries have low hydraulic conductivities, but do allow a significant amount of water to escape the aquifer.

A goods that differs from a non-durable good in that it can be used repeatedly or continuously over a period longer than a year and that differs from a durable good in that its expected lifetime of use, though longer than a year, is often significantly shorter and that its purchasers’ price is substantially less.

Forests in which management has substantially altered the structure and ecological processes but in which growth is still mainly a natural process with no regular and continuous human intervention.

Where herdsmen migrate seasonally forward and backwards with their herds between two specific areas.

Refers to livestock raised by holders who live a semi-nomadic life. Typically, the holder has a permanent residence to which he/she returns for several months of the year according to seasonal factors. For semi-nomadic and semi-pastoral systems, the holder establishes a semi-permanent home for several months or years and may cultivate crops as a supplementary food source. Herds are moved on transhumance to assure forage and water.

Goods road vehicle with no front axle designed in such a way as to be hauled by road tractor.

Debt for which claims on the assets of the borrower rank ahead of other debts in case of liquidation.

The order of priority for repayment of debt.

Racial or ethnic origin; Political opinions; Religious or other similar beliefs; Membership of trade unions; Physical or mental health or condition; Sexual life; and Convictions, proceedings and criminal acts.

Separability is the mathematical property of a (production) function. In productivity analysis, it is sometimes assumed that production functions are weakly separable between primary and intermediate inputs.

This means that the marginal rate of substitution between any pair of primary inputs is independent of the amount of intermediate inputs used. In other words, the demand for any two primary inputs depends only on the price ratio of primary inputs, and is independent from prices of intermediate inputs.

The disunion of married persons, according to the laws of each country, without conferring on the parties the right to remarry.

A pension fund that is legally segregated from both the plan sponsor and a financial institution that acts as the manager of the fund on behalf of the plan member.

Program announced by U.S. Treasury January 15, 1985 to allow separate trading of registered interest and principal of securities, initially for long-term notes and bonds and later for all old and new eligible securities in circulation. See also certificates of accrual on Treasury securities.

Imputation that occurs when a series of variables are edited in sequence, with only edited values used as subsequent hot deck variables.

1. Bond issues split into a series of maturities.
2. Special type of serial bonds where reimbursement is decided by drawing in lots (used in France).

The Serial Line Internet Protocol (also SLIP) is an encapsulation of the Internet Protocol designed to work over serial ports and modem connections.

See European System for the Collection of Economic Information on the Environment.

An injury whereby life could be endangered, including cases of injury involving the use of a dangerous instrument. Cases where instruments are used only to threaten are excluded.