The Demopædia Encyclopedia on Population is under heavy modernization and maintenance. Outputs could look bizarre, sorry for the temporary inconvenience

Multilingual Demographic Dictionary, second unified edition, English volume


Multilingual Demographic Dictionary, second unified edition, English vol.
Jump to: navigation, search
Variable  (VARIABLE)

Data are usually referred to as raw data 1 or crude data 1 prior to their processing and tabulation and basic data 1 or primary data 1 after processing and tabulation. Basic data usually consist of series 2 of absolute numbers 3 which are put together in the form of statistical tables 4 . In such tables the data are generally classified with respect to certain variables 5 or variates 5 such as age, number of children, etc., or with respect to certain attributes 6 or characteristics 6 (i.e. sex, marital status, etc.). Where data are classified with respect to several variables or attributes simultaneously the tables are called cross-tabulations 7 or contingency tables 7 . Summary tables 8 give information in less detail than do individual tables 9 .

  • 1. When the data relate to individuals (110-2) as their unit of analysis they may be referred to as micro-data. Aggregate data or macro-data relate to a unit of analysis other than an individual, for example, a nation or an administrative unit within a nation. Micro-data can be derived from several sources such as a field survey (203-5) or a sample of vital registration records. A new source of micro-data is the census public use sample, which is a systematic or a random sample of census returns that is made available for analytical purposes to interested individuals.
  • 7. A table which presents the distribution of a single variable or attribute within a population is generally called a frequency table.