First, this study estimates (both heterogeneous and homogeneous price adjustment) disequilibrium penetration models.
Most observed prices fluctuate between − 10%and10%10% of the mean and, as expected, are relatively more dispersed than are the homogeneous prices.
This method of deriving homogeneous prices is now standard in the literature (see e.g. Sorensen 2000; Lach 2002; Zhao 2006; Dubois and Perrone 2015).
Figure 1 plots the empirical density function for the spatial dispersion of observed prices (solid line) and of homogeneous prices pooled over products, stores, and days (dashed line).10 Open image in new window Fig. 1 Kernel density of spatial price dispersionl utility (Barcelona).
On the other hand, anxiolytics (low price) and atypical antipsychotics (high price) show homogeneous prices among areas with a coefficient of variation around 5%.
In the past 20 years, several changes have occurred in the Swiss primary health care system with first the introduction of a mandatory health insurance scheme (Lamal) [ 4] and secondly with the introduction of the homogeneous medical pricing (Tarmed) [ 5].
Furthermore in such studies, the conversion of monetary values to energy values is often not required, eliminating the assumption of sector homogeneity, as energy values are not determined from homogeneous energy prices.
The table's first two data columns give the standard deviations of the observed and homogeneous (residual) prices, and the last four columns report the 5th and 95th percentiles of each distribution.
If the new quality altered commodity is accepted, all the other firms will follow the speculator, and the market will again have homogeneous quality and price.
In perfect competition, many indistinguishable and anonymous buyers and sellers trade a homogeneous good at the price at which supply matches demand.
