Statistical Terms Glossary

See Development Assistance Committee

A widely used technique for the stock assessment of multiple spawning pelagic fishes.

The ratio of the dollar equivalent value of the currencies in the currency pool on one day to the dollar equivalent value those same amounts of currencies would have had at exchange rates prevailing on the previous day.

Daily cash net wage paid to the wage employee from the employer.

Tokyo market. Its circulation is similar to that of Eurobonds.

Is a US programme first authorised by the 1985 FSA Act under which the Commodity Credit Corporation subsidises exporters of US dairy products to help them compete with other subsidising nations.

Barrier built across a stream, river, or estuary to conserve water for such uses as human consumption, irrigation, flood control, and electric-power generation.; A barrier constructed across a valley for impounding water or creating a reservoir. Dams are characterized by their purposes and construction materials used.

Total cumulative storage capacity of all large dams. According to ICOLD (International Commission on Large Dams), a large dam is a dam with a height of 15 m or more from the foundation. If dams are 5-15 metres high and have a reservoir volume of more than three million m3 , they are also classified as large dams. However, each country has its own definition of large dams and if information on other dams in a country is available it is also included. The value indicates the theoretical initial capacity, which does not change with time. The current or actual dam capacity is the state of the dams at a given time that can be decreased by silting.
Detailed information on African dams can be found in the AQUASTAT geo-referenced database on African dams on http://www.fao.org/ag/agl/aglw/aquastat/damsafrica/index.stm.

Refers to the accumulation of sediments inside a dam, that leads to a reduction of its useful capacity.

An adjustment item to NDP which corresponds to the reduction of value of assets that is not accounted for in consumption of fixed capital.

Degradation pricing techniques based on an assessment of what the unit suffering from the degradation of the environment would be willing to pay to be free of the effects. They comprise revealed preference methods and stated preference methods.

Damage cost is the cost incurred by repercussions (effects) of direct environmental impacts (for example, from the emission of pollutants) such as the degradation of land or human—made structures and health effects. In environmental accounting, it is part of the costs borne by economic agents

Net domestic income less the value of all damages resulting from the impact of degradation.
The damage adjusted income equals dpNDP (depletion - adjusted NDP) less pollution damage to human health equals daNNI (damage-adjusted national income).

The difference between damage-adjusted income and final consumption by households and the government.

The classes of dangerous goods carried are those defined in the twenty-first revised edition of the United Nations Recommendations on the Transport of Dangerous Goods (2019):
- Class 1: Explosives;
- Class 2: Gases;
- Class 3: Flammable liquids;
- Class 4: Flammable solids, substances liable to spontaneous combustion, substances which, on contact with water, emit flammable gases;
- Class 5: Oxidizing substances and organic peroxides;
- Class 6: Toxic and infectious substances;
- Class 7: Radioactive material;
- Class 8: Corrosive substances;
- Class 9: Miscellaneous dangerous substances and articles, including environmentally hazardous substances.

The classifications of dangerous goods are those defined by the United Nations Committee of Experts on the Transport of Dangerous Goods and subsidiary bodies (ST/SG/AC.10/1/Rev.5).
There are nine classes of dangerous goods:
1. explosives;
2.gases;
3.flammable liquids;
4. flammable solids, substances liable to spontaneous combustion, substances which, on contact with water emit flammable gases;
5. oxidizing substances, organic peroxides;
6. poisonous (toxic) and infectious substances;
7. radioactive material;
8. corrosives; and,
9. miscellaneous dangerous substances.

As reported by the police or other authorities.

In computer science, data is anything in a form suitable for use with a computer.

Characteristics or information, usually numerical, that are collected through observation.

In computing, a buffer is a region of memory used to temporarily hold data while it is being moved from one place to another.

The process by which collected data are put into a machine-readable form. Elementary edit checks are often performed in submodules of the software that captures the data.

A hardware signal defined by the RS-232-C standard that indicates that the device, usually a modem, is online and ready for transmission.

In telecommunication, data compaction is the reduction of the number of data elements, bandwidth, cost, and time for the generation, transmission, and storage of data without loss of information by eliminating unnecessary redundancy, removing irrelevancy, or using special coding.

Able to share data or commands with older versions of itself, or sometimes other older systems, particularly systems it intends to supplant. Sometimes backward compatibility is limited to being able to read old data but does not extend to being able to write data in a format that can be read by old versions.

Is a nonparametric method in operations research and economics for the estimation of production frontiers. It is used to empirically measure productive efficiency of decision making units (or DMUs).