| Input-Output
Table |
| It is one of the crucial tools used to understand the components
of GDP. It also shows the interrelationships within the national economy and
the interrelationships between various industries, where each activity uses
the products of other activity as intermediate consumption or fixed capital
formation, while the products of this activity may be used as intermediate or
capital uses in other activity. The activities in Input-output tables appear
as producer at the row level, and as consumer at the column level. |
| The
input-output table consist of four matrices, which are as follows: |
| Intermediate demand matrix: |
| It is concerned with displaying the interrelationships between
the various economic activities, through a square matrix that shows the
activities as producers in the rows and consumers in the columns. It includes
all transactions of domestic and imported goods and services that are used as
intermediate consumption in the various economic activities of the production
units. Accordingly, each row represents a specific economic activity and the
method of distributing the intermediate demand from its output and imports,
while the corresponding column for the activity shows what it uses from its
own output, the output of other economic activities and imports. |
| Final demand
matrix |
| This matrix includes the various goods and services consumed by
government, household and non-profit institutions serving households sectors
as final consumption expenditure and also includes items of fixed capital
formation, change in inventory and exports while displays the
interrelationship between economic activities and the components of final
demand. |
| Value-added
matrix: |
| displays the interrelationship between the components of added
value (returns of production factors: wages, operating surplus) with various
economic activities. |
| Production
matrix |
| It expresses the total production of economic activities
horizontally and vertically so that the total inputs for each activity are
equal to the total outputs for the same activity. |