| CPI(A), CPI(B), CPI(C) and Composite CPI |
Different series of CPIs are compiled by the Census and Statistics Department (C&SD) to reflect the impact of consumer price changes on households in different expenditure ranges. The CPI(A), CPI(B) and CPI(C) are compiled based on the expenditure patterns of households in the relatively low, medium and relatively high expenditure ranges respectively. A Composite CPI is compiled based on the overall expenditure pattern of all the above households taken together to reflect the impact of consumer price changes on the household sector as a whole. |
| Household Expenditure Survey |
Based on the household expenditure patterns obtained from the Household Expenditure Survey (HES) conducted during October 2009 to September 2010, the C&SD has updated the base period and expenditure weights for compiling the CPIs. After rebasing, the CPI(A), CPI(B) and CPI(C) continue to reflect the price changes faced by households in the relatively low, medium and relatively high expenditure ranges respectively. Likewise, the Composite CPI continues to reflect the impact of the changes in consumer prices on the household sector as a whole. The expenditure brackets for the 2009/10-based CPI series are as follows : | Approximate | Average monthly | | percentage of | household expenditure during |
| Index | households covered | October 2009 to September 2010 | | CPI(A) | 50% | $ 4,500-$18,499 | | CPI(B) | 30% | $18,500-$32,499 | | CPI(C) | 10% | $32,500-$65,999 |
| Composite CPI | 90% | $4,500-$65,999 |
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