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The National Statistical Office (NSO) headed by a Director General is responsible for conduct of large scale sample surveys in diverse fields on All India basis. Primarily data are collected through nation-wide household surveys on various socio-economic subjects, Annual Survey of Industries (ASI), etc. Besides these surveys, NSO collects data on rural and urban prices and plays a significant role in the improvement of crop statistics through supervision of the area enumeration and crop estimation surveys of the State agencies.  It also maintains a frame of urban area units for use in sample surveys in urban areas.  

The NSO has four Divisions:

Survey Design and Research Division (SDRD): This Division, located at Kolkata, is responsible for technical planning of surveys, formulation of concepts and definitions, sampling design, designing of inquiry schedules, drawing up of tabulation plan, analysis and presentation of survey results.

Field Operations Division (FOD): The Division, with its headquarters at Delhi/Faridabad and a network of six Zonal Offices, 52 Regional Offices and 117 Sub-Regional Offices spread throughout the country, is responsible for the collection of primary data for the surveys undertaken by NSO.

Data Processing Division (DPD): The Division, with its headquarters at Kolkata and 5 other Data Processing Centers at various places, is responsible for sample selection, software development, processing, validation and tabulation of the data collected through surveys. Price and Wages in Rural India collected through schedule 3.01(R) is being processed at DPC Giridih. In addition, DPD is also processing the data of Periodic Labour Force Survey (PLFS). Industrial Statistics Wing (IS Wing), DPD, NSO, Kolkata is responsible for sample selection, data processing, validation and tabulation of the Annual Survey of Industries(ASI) data collected through a dedicated web-portal.

Survey Coordination Division (SCD): This Division, located at New Delhi, coordinates all the activities of different Divisions of NSO. It also brings out the bi-annual journal of NSO, titled “Sarvekshana”, and organizes National Seminars on the results of various Socio-economic surveys undertaken by NSO.

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