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After performing a review of the classical procedures for estimation in the principal component analysis (PCA) of a second order stochastic process, two alternative procedures have been developed to approach such estimates. The first is based on the orthogonal projection method and uses cubic...
A stochastic model is developed to study household behaviour with regard to purchase quantity, brand choice and purchase timing before, during and after a price change and a price promotion such as price‐offs and price‐cuts. The basic assumption of the model is that price promotion and levels of...
This paper proposes an approach to jointly testing functional forms and heteroscedasticity within the general Box‐Cox transformation framework. The approach is then applied to decide empirically the character of the residuals from regressions of properties' open market prices on their valuation.
The purpose with this paper is first to analyse the strategies of Allfinanz (Bancassurance) in Germany and then to investigate if the German banks have become more efficient during the period since Allfinanz was introduced. Two methods are used to analyse efficiency: ‘financial ratio analysis’...
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