Analysis of Revisions in Indian GDP Data
& Rajeswari Sengupta
Published: December 2017
This paper studies constant price growth estimates of India’s annual GDP data in order to understand the revision policy adopted by the Central Statistics Office. The use of high-frequency indicators to prepare initial estimates overstates the growth of the economy, although at the aggregate level the difference between initial estimates and final revisions is low. At the sectoral level the extent of revision for almost all sectors is large and the magnitude and direction of the revision is unpredictable. The Central Statistical Office must address issues in data quality and revisions by (i) adopting a comprehensive revision policy, (ii) supplying information and data on high frequency indicators and (iii) adopting revision metrics to assess the quality of estimates.