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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
The table summarizes national income on the left (debit, revenue) side and national product on the right (credit, expense) side of a two-column accounting report. 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.
A variety of measures of national income and output are used in economics to estimate total economic activity in a country or region, including gross domestic product (GDP), Gross national income (GNI), net national income (NNI), and adjusted national income (NNI adjusted for natural resource depletion – also called as NNI at factor cost).
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 ...
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]
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 ∗ ...
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.
Because this value must be subtracted from gross output to arrive at GDP, how it is exactly defined and estimated will importantly affect the size of the GDP estimate. Intermediate goods or services used in production can be either changed in form (e.g. bulk sugar) or completely used up (e.g. electric power).