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Chỉ số giá - Price 281
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.
Gold price index and USD price index
are relative indicators (measured by
%) reflecting the tendency and change in the price level of gold and USD by time
series in market.
Gold and USD prices are daily recorded at retail shops, average gold and USD
price is computed as the average of prices of days in a month.
Formula for computing gold and USD price is as follows:
t
t t 1
i
t 1
i
i
P
p
P
100
i
Where:
t t 1
i
p
i
: Gold or USD price index in the reference month (t) compared to the
previous month (t-1);
t
i
P
: Average gold or USD price in the reference month (t);
t 1
i
P
: Average gold or USD price in the previous month (t-1).
Gold price index and USD price index are 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.
Average consumer price of some goods and services in the local area
is
the amount of money that consumers spend to buy a unit of goods or service to
serve for daily life. Consumer price is shown by the retail price of goods in
market or the price of services for people’s livings (including VAT). In case that
the prices of goods and services are not marked and consumers can bargain, the
consumer price is the final price of goods paid by consumers in market after
negotiation with sellers.
Formula for computing average consumer price is as follows: