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All superlative indices produce similar results and are generally the favored formulas for calculating price indices. [14] A superlative index is defined technically as "an index that is exact for a flexible functional form that can provide a second-order approximation to other twice-differentiable functions around the same point." [15]
In microeconomics, the expenditure function gives the minimum amount of money an individual needs to spend to achieve some level of utility, given a utility function and the prices of the available goods. Formally, if there is a utility function that describes preferences over n commodities, the expenditure function
Thus the left side gives GDP by the income method, and the right side gives GDP by the expenditure method. The GDP is given on the bottom line of both sides of the report. GDP must have the same value on both sides of the account. This is because income and expenditure are defined in a way that forces them to be equal (see accounting identity ...
Measures of GDP typically exclude unpaid economic activity, most importantly domestic work such as childcare. This leads to distortions; for example, a paid nanny's income contributes to GDP, but an unpaid parent's time spent caring for children will not, even though they are both carrying out the same economic activity.
GDP (Gross Domestic Product) is the value of all goods and services produced within a country during one year. GDP measures flows rather than stocks (example: the public deficit is a flow, measured per unit of time, while the government debt is a stock, an accumulation). GDP can be expressed equivalently in terms of production or the types of ...
For oil-export-dependent economies, there could be substantial differences between real GDP and real GDI, due the effect of oil price volatility on the purchasing power in those countries. [1] [2] In the United States National Income and product accounts, the word GDI is use to define GDP calculated with income data rather than expenditure data ...
Real GDP can be used to calculate the GDP growth rate, which indicates how much a country's production has increased (or decreased, if the growth rate is negative) compared to the previous year, typically expressed as percentage change. The economic growth can be expressed as real GDP growth rate or real GDP per capita growth rate.
Formally, the expenditure function is defined as follows. Suppose the consumer has a utility function u {\displaystyle u} defined on L {\displaystyle L} commodities. Then the consumer's expenditure function gives the amount of money required to buy a package of commodities at given prices p {\displaystyle p} that give utility of at least u ∗ ...