Statistical Terms Glossary

See:Accrued benefits

The total value of assets accumulated in a pension fund.

The actuarial present value of benefits, vested and non-vested, attributed to the pension formula to employee service rendered to a particular date, based on current salaries.

See: Accumulated assets

Accumulation is the acquisition of fixed assets, stocks of non-durable goods, land, mineral deposits and other non-reproducible tangible assets, financial assets, patents, copyrights and other tangible assets during a period of account less the incurrence

Accumulation accounts are flow accounts that record the acquisition and disposal of financial and non-financial assets and liabilities by institutional units through transactions or as a result of other events.

Closeness of computations or estimates to the exact or true values that the statistics were intended to measure.

An indicator of the closeness of an estimated population parameter to the actual population value. Accuracy is generally not known unless cross-checking procedures are conducted from time to time using other survey approaches. It should not be confused with precision which measures the variability of the estimates and can always be computed from the samples.

A list of process areas and their corresponding capability levels that represent the organization’s progress for each process area while advancing through the capability levels.

Acid precipitation is any form of precipitation (rain, snow, hail or fog) whose acidity has been increased through the intake of acid pollutants from the air.

Any form of precipitation (rain, snow, hail or fog) whose acidity has been increased through the uptake of acid pollutants from the air.

The aggregate measure of the acidifying potential of some substances, calculated through the conversion factor of sulphur oxides and nitrogen and ammonia into acidification equivalents (H+ ion).

The standard IBRD definition is the ratio of cash plus marketable securities plus accounts receivable plus other amounts readily convertible into cash to current liabilities. Other definitions include ratio of current assets less inventories to current liabilities ratio of quick assets to current liabilities, ratio of cash plus near-cash assets to current liabilities, and ratio of cash plus accounts receivable plus the market value of selected investments to current liabilities.

They are intended to deter animals from approaching fish traps or aquaculture cages and sea pens by using higher sound outputs that typically inflict pain or discomfort.

A systematic method of gathering information on fish availability and abundance in a water body with the help of sophisticated instruments, such as echo sounders and sonar, that employ ultrasonic sound for the detection of fish.