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  2. Measurement in economics - Wikipedia

    en.wikipedia.org/wiki/Measurement_in_economics

    A fixed-price value measure is used to measure changes in quality and quantity. True to its name, prices are kept fixed for a minimum of two measuring situations. For this reason, it is possible to define the changes in quality and quantity of a most varied and wide range of commodities, keeping apart the changes in income distribution.

  3. Econometrics - Wikipedia

    en.wikipedia.org/wiki/Econometrics

    Econometrics is an application of statistical methods to economic data in order to give empirical content to economic relationships. [1] More precisely, it is "the quantitative analysis of actual economic phenomena based on the concurrent development of theory and observation, related by appropriate methods of inference."

  4. Cobweb model - Wikipedia

    en.wikipedia.org/wiki/Cobweb_model

    If the demand curve is steeper than the supply curve, then the fluctuations increase in magnitude with each cycle, so that prices and quantities spiral outwards. This is called the unstable or divergent case. Two other possibilities are: Fluctuations may also maintain a constant magnitude, so a plot of the outcomes would produce a simple rectangle.

  5. Macroeconomic model - Wikipedia

    en.wikipedia.org/wiki/Macroeconomic_model

    A macroeconomic model is an analytical tool designed to describe the operation of the problems of economy of a country or a region. These models are usually designed to examine the comparative statics and dynamics of aggregate quantities such as the total amount of goods and services produced, total income earned, the level of employment of productive resources, and the level of prices.

  6. Dynamic lot-size model - Wikipedia

    en.wikipedia.org/wiki/Dynamic_lot-size_model

    The dynamic lot-size model in inventory theory, is a generalization of the economic order quantity model that takes into account that demand for the product varies over time. The model was introduced by Harvey M. Wagner and Thomson M. Whitin in 1958. [1] [2]

  7. Quantity - Wikipedia

    en.wikipedia.org/wiki/Quantity

    The magnitude of an intensive quantity does not depend on the size, or extent, of the object or system of which the quantity is a property, whereas magnitudes of an extensive quantity are additive for parts of an entity or subsystems. Thus, magnitude does depend on the extent of the entity or system in the case of extensive quantity.

  8. Scale analysis (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Scale_analysis_(mathematics)

    Scale analysis anticipates within a factor of order one when done properly, the expensive results produced by exact analyses. Scale analysis rules as follows: Rule1-First step in scale analysis is to define the domain of extent in which we apply scale analysis. Any scale analysis of a flow region that is not uniquely defined is not valid.

  9. Cardinal utility - Wikipedia

    en.wikipedia.org/wiki/Cardinal_utility

    The magnitude of the marginal utility is not the same for all cardinal utility indices representing the same specific preference structure. The sign of the second derivative of a differentiable utility function that is cardinal, is the same for all the numerical representations of a particular preference structure.