Page 282 - NGTK2018

I
: Production index for the N-th class of the VSIC 4-digit class.
qN
4
I : Production index for the n-th item in the VSIC 4-digit class.
qn
W : Weight of the item n. Weight of item is the value at basic price of the item
qn
in the base year 2015.
- Step 3: Calculating production index of VSIC 2-digit divisions
The production index at 2-digit division of VSIC industry is the weighted
average index of the production indices of VSIC 4-digit classes under the VSIC 2-
digit divisions.
Formula:
 I  W
qN
I qN 2   4 W qN 4 qN 4
Where:
I qN 2 : Production index of the VSIC 2-digit divisions.
I qN 4 : Production index of the VSIC 4-digit classes.
W qN 4 : Weight of the VSIC 4-digit divisions. Weight of the VSIC 4-digit

divisions is the value added at current price of the base year 2015.
- Step 4: Calculating production index of VSIC 1-digit sector
The production index at 1-digit sector of VSIC industry is the weighted average
index of the production indices of VSIC 2-digit divisions under the VSIC 1-digit
sectors.
Formula:
 I  W
I  qN 2 qN 2
 W qN 2
qN
1
Where:
I qN 1 : Production index of the VSIC 1-digit sectors.

I qN 2 : Production index of the VSIC 2-digit division.
W qN 2 : Weight of the VSIC 2-digit divisions. Weight of the VSIC 2-digit

divisions is the value added at current price of the base year 2015.
- Step 5: Calculating production index of the whole industry
The production index of the whole industry is the weighted average index of
VSIC 1-digit sectors representing in the whole industry.

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