Data doubts, Pg8

Key Highlights:

• India's Index of Industrial Production (IIP) recorded a five-month high growth of 5.1% in May 2026.
• The manufacturing sector grew by 5.5% in May, contributing significantly to the overall industrial output.
• The Ministry of Statistics and Programme Implementation (MoSPI) updated its methodology, replacing the Wholesale Price Index (WPI) with the Producer Price Index (PPI) as a deflator for some sectors.
• This strong IIP growth contrasts with the Index of Eight Core Sectors, which showed its second-lowest growth in 21 months during the same period.

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Detailed Insights:

• The robust IIP figures are debated, with some attributing growth to a revival in domestic consumption, particularly in consumer durables.
• An alternative view suggests that export growth is the primary driver, as merchandise exports hit a four-year high in April and an all-time high in May.
• GST revenues from domestic transactions have shown slower growth over the last six months compared to previous years, supporting the export-led growth argument.
• The adoption of the Producer Price Index (PPI) is considered a more accurate approach for estimating production value.
• The delayed implementation of the new methodology by MoSPI raises concerns about the systematic approach to data upgrades.
• The significant discrepancy between the IIP and the Index of Eight Core Sectors highlights potential inconsistencies in measuring industrial performance.

Key Concepts Involved:

• Index of Industrial Production (IIP): A composite indicator that measures the short-term changes in the volume of production of a basket of industrial products.
• Wholesale Price Index (WPI): Measures the average change in the prices of commodities at the wholesale level, used as a deflator for economic data.
• Producer Price Index (PPI): Measures the average change over time in the selling prices received by domestic producers for their output.
• Index of Eight Core Sectors: Represents the output of eight fundamental industries, accounting for a significant portion of the IIP.