Jump to: navigation , search The National Sample Survey Organisation ( NSSO ), now known as National Sample Survey Office , is an organization under the Ministry of Statistics of the Government of India . It is the largest organisation in India conducting regular socio-economic surveys. It was established in 1950. NSSO has four divisions: [ 1 ] Survey Design and Research Division (SDRD) Field Operations Division (FOD) Data Processing Division (DPD) Co-ordination and Publication Division (CPD Survey Design and Research Division (SDRD) The Survey Design and Research Division (SDRD) is a professional organ of NSSO, mandated to do the job of :• planning of the survey• Formulation of sample design• Drawing up of schedules of enquiry • Formulation of concepts and definitions• Preparation of instruction manual for survey field work• Training of field and data processing personnel on survey methodology• Formulation of scrutiny...