Basic HTML Version
Chỉ số giá - Price 282
) /1(
,
1 ,1
, ,
)
(
N
KM
k j
kj i
i
P
P
Where:
iP
: Average price in the reference month of item i;
P
i,j,k
: Surveyed price of item i at place j, period k;
K: Number of survey periods of item i in the reference month, K = 1÷3;
k: The survey period of item i, k = 1÷K;
M: Number of survey places of item i in the reference month;
j: Survey place of item i in period k in reference month, j = 1 ÷M;
N: Number of samples of item i’s price collected in the reference
month, N = M x K.