Measurement of Economic Activity and Historical Evolution
Inventory
Accounting
Keynes defines the main macroeconomic variables to be measured
Kuznets proposes a system of national accounts
Samuelson (1948)
Practice by your own
Here, with Net Taxes on Production and Imports =0 : VA -> Gross Operating Surplus
Check: Sum of Revenues - Sum of Cost = Sum VA
GDP_factor_cost = VA
Mathematical Properties of the Natural/Neperian Logarithm (ln)