Sales Distribution of Consumer Electronics

Details Sales Distribution of Consumer Electronics Sales Distribution of Consumer Electronics

2010-04-05

arxiv.org/abs/1004.0637v2

Physica A 390, 309-318, 2011

Physics

Physics and Society

Scientific paper

10.1016/j.physa.2010.09.033

Using the uniform most powerful unbiased test, we observed the sales distribution of consumer electronics in Japan on a daily basis and report that it follows both a lognormal distribution and a power-law distribution and depends on the state of the market. We show that these switches occur quite often. The underlying sales dynamics found between both periods nicely matched a multiplicative process. However, even though the multiplicative term in the process displays a size-dependent relationship when a steady lognormal distribution holds, it shows a size-independent relationship when the power-law distribution holds. This difference in the underlying dynamics is responsible for the difference in the two observed distributions.

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