Acensusis the procedure of systematically calculating, acquiring and recordingabout the members of a given. This term is used mostly in connection with; other common censuses include the, and other censuses such as the traditional culture, business, supplies, and traffic censuses. Thedefines the essential features of population and housing censuses as “individual enumeration, universality within a defined territory, simultaneity and defined periodicity”, and recommends that population censuses be taken at least every ten years. United Nations recommendations also cover census topics to be collected, official definitions, classifications and other useful information to co-ordinate international practices.
The, in turn, defines theas a statistical operation for collecting, processing and disseminating data on the structure of agriculture, covering the whole or a significant part of a country. In a census of agriculture, data are collected at the holding level.
The word is oforigin: during the, the census was a list that kept track of all adult males fit for military service. The modern census is essential toof any kind of statistics, and censuses collect data on many attributes of a population, not just how many people there are. Censuses typically began as the only method of collecting national demographic data, and are now part of a larger system of different surveys. Although population estimates remain an important function of a census, including exactly the geographic distribution of the population or the agricultural population, statistics can be produced about combinations of attributes e.g. education by age and sex in different regions. Currentsystems allow for other approaches to enumeration with the same level of detail but raise concerns about privacy and the possibility of biasing estimates.
A census can be contrasted within which information is obtained only from a subset of a population; typically main population estimates are updated by such. Modern census data are commonly used for research, business, and planning, and as a baseline for designing sample surveys by providing a sampling frame such as an address register. Census counts are necessary to adjust samples to be representative of a population by weighting them as is common in. Similarly,requires knowledge of the relative sizes of different population strata, which can be derived from census enumerations. In some countries, the census provides the official counts used to apportion the number of elected representatives to regions (sometimes controversially e.g.,). In many cases, a carefully chosen random sample can provide more accurate information than attempts to get a population census