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Industrial production in the country expanded 4.8 per cent in January, slowing from a growth rate of 5.2 per cent in the corresponding period a year ago, official data showed on Monday. Trends in factory output -- also known as industrial production -- are captured using data from the Index of Industrial Production (IIP), which captures activities in key sectors including manufacturing, mining and power to gauge overall industrial productivity over a given period of time.
A slowdown in manufacturing sector activity weighed on the overall factory output slowdown. The space carries the maximum weightage of almost 78 per cent in the IIP index.
The latest data comes days after separate data showed the country's GDP growth slowed to 7.8 per cent from 8.4 per cent in the previous month. The slowdown was on account of a base year revision. That reading was above market expectations. With that, the government revised its annual full-year growth projection to 7.6 per cent from 7.1 per cent, reflecting the reset of the country’s economic data under the new series.
Here are 10 things to know about the latest industrial production readings:

Source: Ministry of Statistics & Programme Implementation (MoSPI)
Official IIP data is released on the 28th of every month or the next working day if the 28th is a holiday. February's data will be released on March 30.
Here are frequently asked questions (FAQs) on the subject:
What is industrial production? Why is it measured?
Industrial production tracks the output of key sectors like manufacturing and power to gauge the country’s overall factory activity.
How is it measured?
It is measured using the Index of Industrial Production (IIP), which captures trends across core sectors and different categories of goods.
What does IIP data tell?
It shows how the country's industrial sector is performing, tracking production trends in key sectors.
What are primary goods under IIP?
Primary goods include food products, crude materials, minerals, metals, cotton and logs.
What are capital goods?
Capital goods are machinery, tools and equipment used by industries.