Sources of population data quality and reliability of population data and problems mapping population data

This ppt content is
Sources of population data
Quality and reliability of population data
Problems of mapping population data

1. SOURCES OF POPULATION DATA, QUALITY AND RELIABILITY OF DATA, PROBLEM OF MAPPING POPULATION DATA NAME- NITIKA CLASS- M.Sc FINAL YEAR ROLL NO- 23572038 SUBMITTED TO- Mr. VIKRAM SIR

2. what is population data ? Population data refers to the systematic collection, analysis, and interpretation of information about the characteristics, size, distribution, and dynamics of a populations. * Definition :* "Population data encompasses quantitative and qualitative information about individuals or groups within a defined geographic area, providing insights into demographic, social, economic, and environmental aspects of human populations ."

3. To record the situation of population at any give for a particular place. This is also known as stock data. It is presented by census and various social surveys. To record the population dynamics , that is the population composition, combined effect of birth, death and migration on a particular area it is known as flow data. Why does population geographers need data Any population geographer need population data mainly for two reasons:-

4. sources of population data Census Population register Vital statistics International publications Demographic sample survey

5. CENSUS It is the single largest source of data for population studies all over the world. HISTORY OF CENSUS : - The earliest example of modern type of census is known to have been conducted in new France (present day Quebec) in Canada in, 1665 and Iceland in 1703. The first periodical census began in the United States in 1790 and in British and France in 1802 . The decennial census of India has been conducted 15 times, as of 2011. While it has been Undertaken every 10 years, beginning in 1872 under British viceroy lord Mayo the first complete census was taken in 1881. Post 1949, it has been conducted by the Register general and census commissioner of India under the Ministry of Home Affairs Government of India.

6. All the censuses since 1951 were conducted under the " 1948 census of India act ". The census of India 2011 was conducted in two phases:- House listing and House census population census . CENSUS

7. VITAL REGISTRATION SYSTEM/CIVIL REGISTRATION SYSTEM Civil registration records in India are obtained from two main sources:- Birth and death registration Population registration DEMOGRAPHIC SAMPLE SURVEY Data are obtained from selected samples and the extent of statistical error in the data is minimized by regulating the size of the samples. There are three types of demographic sample survey going on in India:- National sample survey Sample registration system National family health survey

8. POPULATION REGISTERS Sweden is said to be the first country to have started this system in the seventeenth century. In India, it is known as National Population Register (NPR). It is a register of usual residents of the country. It is being prepared at the local(village/sub-town), sub-district, district, state and national level under provisions of the citizenship act 1955 and the citizenship( Registration of citizens and issue of national identity cards) rules,2003 . It is mandatory for every usual resident of India to register in the NPR . INTERNATIONAL PUBLICATIONS International organizations publish population-related data from all over the world and across different countries in the form of journals from time to time. The most important is the demographic year book published by the United Nations. The major publications of the united nations are as follows: Demographic Annual Journal United Nations Development Report Human Development Report World Population Data Sheet Statistics Annual Journal Population and birth and death statistics etc.

9. WHAT IS DATA RELIABILITY AND QUALITY RELIABILTY: Data reliability, sometimes referred to as data observability , is the degree to which data, and the insights gleaned from it can be trusted and used for effective decision-making Data reliability has two critical elements: 1. Accuracy 2. Consistency . QUALITY: The quality of population data can very widely across countries. The quality of a population can also be determined by factors such as education, health, and sanitation. A literate and healthy population is considered an asset to the economy, while an illiterate and unhealthy population is considered a liability. The quality of population data can be assessed using a population data quality rating (PDQR). The PDQR is a rating system created by world economics the evaluates the relative accuracy of population estimates. Factors: Last census date Statistical capacity Percentage registration of births

10. PROBLEMS OF MAPPING POPULATION DATA Maps of human population distribution have found use in disease burden estimation, resource allocation, disaster management, transport and city planning, poverty mapping and environmental impact assessment amongst other applications. High income countries often have extensive mapping resources and expertise at their disposal to create such databases, but across the low income regions of the world, relevant data are either lacking or are of poor quality. Some problems with mapping population data include: Lack of data Lack of resources Inconsistent data Low resolution Lack of qualified personnel Lack of maintenance Timeliness Mismatch between dwellings and addresses