Showing 1 - 10 of 45
Common approaches to test for the economic value of directional forecasts are based on the classical Chi-square test for independence, Fisher’s exact test or the Pesaran and Timmerman (1992) test for market timing. These tests are asymptotically valid for serially independent observations....
Persistent link: https://www.econbiz.de/10010271838
The contingency table literature on tests for dependence among discrete multi-category variables is extensive. Existing tests assume, however, that draws are independent, and there are no tests that account for serial dependencies - a problem that is particularly important in economics and...
Persistent link: https://www.econbiz.de/10010276251
We present a new approach to handle dependencies within the general framework of case-control designs, illustrating our approach by a particular application from the field of genetic epidemiology. The method is derived for parent-offspring trios, which will later be relaxed to more general...
Persistent link: https://www.econbiz.de/10010296719
Over the past few decades correspondence analysis has gained an international reputation as a powerful statistical tool for the graphical analysis of contingency tables. This popularity stems from its development and application in many European countries, especially France, and its use has...
Persistent link: https://www.econbiz.de/10009482056
Log-linear modeling is a popular statistical tool for analysing a contingency table. This presentation focuses on an alternative approach to modeling ordinal categorical data. The technique, based on orthogonal polynomials, provides a much simpler method of model fitting than the conventional...
Persistent link: https://www.econbiz.de/10009482057
We define and investigate classes of statistical models for the analysis of associations between variables, some of which are qualitative and some quantitative. In the cases where only one kind of variables is present, the models are well-known models for either contingency tables or covariance...
Persistent link: https://www.econbiz.de/10009441395
This paper introduces a new test of the predictive performance and market timing for categorical forecasts based on contingency tables when the user has non-categorical loss functions. For example, a user might be interested in the return of an underlying variable instead of just the direction....
Persistent link: https://www.econbiz.de/10012214177
The relevance of a fund manager's educational and experience profile to the size of investment portfolio return has been the subject of recurrent research in the last decade. While previous research considered an external reference point of view analysing industry-wide aggregated data, little...
Persistent link: https://www.econbiz.de/10005438028
Persistent link: https://www.econbiz.de/10005376467
The contingency table literature on tests for dependence among discrete multi-category variables is extensive. Existing tests assume, however, that draws are independent, and there are no tests that account for serial dependencies−a problem that is particularly important in economics and...
Persistent link: https://www.econbiz.de/10005406058