Page 593 - niengiam2022

W i 0  n V i 0 : Weight in the constant base period (0);
V 0
 i
i 1

0
V : Consumer expenditure in the constant base period (0);
i
n: The number of items/item groups.

CPI is computed monthly by the following comparative bases: base
year, previous month, same month of the last year, last December and
periodical average for every province/city directly under the central
government.

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