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Price dispersion can be viewed as a measure of trading frictions (or, tautologically, as a violation of the law of one price). It is often attributed to consumer search costs or unmeasured attributes (such as the reputation) of the retailing outlets involved. There is a difference between price dispersion and price discrimination. The latter ...
Since observed price changes do not follow Gaussian distributions, others such as the Lévy distribution are often used. [1] These can capture attributes such as "fat tails". Volatility is a statistical measure of dispersion around the average of any random variable such as market parameters etc.
In statistics, dispersion (also called variability, scatter, or spread) is the extent to which a distribution is stretched or squeezed. [1] Common examples of measures of statistical dispersion are the variance, standard deviation, and interquartile range. For instance, when the variance of data in a set is large, the data is widely scattered.
Dispersion (finance), a measure for the statistical distribution of portfolio returns; Price dispersion, a variation in prices across sellers of the same item; Wage dispersion, the amount of variation in wages encountered in an economy; Dispersed knowledge, notion that any one person is unable to perceive all economic forces
This measure does not account for the volatility σ of the underlying asset. Unlike previous inputs, volatility is not directly observable from market data, but must instead be computed in some model, primarily using ATM implied volatility in the Black–Scholes model. Dispersion is proportional to volatility, so standardizing by volatility ...
The Price Sensitivity Meter (PSM) is a market technique for determining consumer price preferences. It was introduced in 1976 by Dutch economist Peter van Westendorp . The technique has been used by a wide variety of researchers in the market research industry.
The latest measure represents an increase from 6.29% seen last week. There remains a large dispersion ... the main reason the S&P CoreLogic Case-Shiller index showed Tuesday that home prices in 20 ...
If the number of firms in the market is held constant, then a higher variance due to a higher level of asymmetry between firms' shares (that is, a higher share dispersion) will result in a higher index value. See the Brown and Warren-Boulton (1988) and Warren-Boulton (1990) texts cited below.