What goes into the index

The Consumer Price Index is a measure of the average change, over time, in the prices paid by consumers for a basket of goods and services.

It is developed from detailed expenditure information provided by families covered in the Household Expenditure Survey that is conducted every five years.

This information will determine the importance, or weightage, of the categories of items in the CPI structure.

The trend of eating out is also captured in the CPI, as it also calculates the price increase of fast-food items such as KFC, McDonald's, satay ayam, curry mee, roti canai and chicken rice.

Transport includes the purchase of new cars and motorcycles, and transport services.

The cost for telephone calls, prepaid cards and mobile phones are grouped in Communications, with a weightage of 4.6 per cent respectively.

Among others, insurance and financial services are weighted in Miscellaneous Goods and Services.

Many have argued that the CPI is heavily skewed because most of the items are either heavily subsidised or price-controlled but Domestic Trade, Cooperatives and Consumerism Minister Datuk Seri Ismail Sabri Yaakob says the weightage for these goods are only 6.7 per cent.

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