Definition and characteristics of GDP

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Definition and characteristics of GDP

Definizione e caratteristiche del PIL

Here is a definition and characteristics of GDP

The GDP is the value of all final goods and services produced by the economic system in a given period of time considered. GDP measures so wealth and well-being of an economic system.

Be careful though not to confuse gross domestic product with the gross national product. The first is a clear indication that the inputs must reside in the national territory while the latter includes ownership of inputs that are in the hands of businesses and domestic manufacturers (wherever they are, such as the Peugeot in Germany).
The GDP is then measured by two kinds of prices, those currents that characterize the GDP nominal and the constants that determine the Real GDP.
Nominal GDP measures the value of goods and services at market prices, you change every year since the produced quantity of goods and services varies and depends on the market price.
Real GDP measures the value of the actual production of goods and services in the system, its evolution over time takes as a constant reference prices for a particular item all ’ base year.

Real GDP may therefore be useful to make international comparisons or intertemporal.

A possible example to make more understandable the above could be an archipelago in two different years
The first year it produces:

30 bananas / unit price 5 / total 150

3 Remi / unit price 6 / total 18

5 fish / unit price 5 / total 25

1 raft / unit price 25 / total 25

GDP in local currency: 218

The second year it produces:

20 bananas / unit price 7 / total 140

4 Remi / unit price 8 / total 32

11 fish / unit price 6 / total 66

3 rafts / unit price 25 / total 75

GDP in local currency: 313

Do you think l ’ archipelago has produced more wealth? Well it is not so… That's why:
You have to multiply the price of the first year for the amount of the second to see if c ’ is actually an increase of wealth:

5 x 20 = 100
6 x 4 = 24
5 x 11 = 55
25 x 3 = 75
Real GDP = 254

As you can see from the first to the second year c ’ was therefore a decrease in richness of our archipelago of 59 local currencies.

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