Gurucharan Manna is a Senior Advisor at NCAER. He was the Director General of the Central Statistical Office (CSO) and National Sample Survey Office (NSSO) in the Government of India. Dr Manna has nearly 40 years of specialized experience in the development of sample design, estimation procedures for household and establishment surveys, and the design of survey questionnaires and related documents for fieldwork and data validation.  Over the years, his responsibilities at NSSO/CSO have included the compilation of GDP estimates; conduct of the 6^th Economic Census; technical coordination and supervision of the Annual Survey of Industries, Energy Statistics, and Infrastructure Statistics; compilation of the Index of Industrial Production and the Index of Service Production; finalization of survey methodologies and reports for NSSO socio-economic surveys; and compilation of foreign trade statistics. He is currently the Chairman of the Editorial Advisory Board of Sarvekshana – a half-yearly journal being brought out by National Statistics Office, Ministry of Statistics and Programme Implementation. He is also the Chairman of the Expert Committee to review the existing methodology of Integrated Sample Survey as well as Chairman of the Expert Committee on Economic Census, 2025-26. He is also a Member of the Advisory Committee on National Accounts Statistics.