Quality and credibility problems of govt data

The problems with the NSSO survey, now a part of the CSO, is that it has failed to keep pace with the changing times

The leaked Consumer Expenditure Survey (CES) has once again highlighted the importance of statistical data. In this context, I would like to highlight the perennial issues associated with the consumer price index (CPI) data that is used as a policy input by the Reserve Bank of India (RBI) for inflation targeting. 

In January 2015, the Central Statistics Office (CSO) revised the base year of CPI to 2012 (from 2010=100). The weighting pattern of the revised series was based on the 2011-12 CES of the National Sample Survey Office (NSSO). The weight for food and beverages in CPI was taken as 45.86