Showing 1 - 8 of 8
Financial Engineering war gestern. Mit steigendem Renditedruckrücken Finanzinvestoren näher an ihre Managementteams heran.Sie ernennen qualifizierte Beiräte, beeinflussen die Strategieund engagieren sich über Berater auch im Tagesgeschäft.
Persistent link: https://www.econbiz.de/10008939868
Many postulated relations in finance imply that expected asset returns should monotonicallyincrease in a certain characteristic. To examine the validity of such a claim, onetypically considers a finite number of return categories, ordered according to the underlyingcharacteristic. A standard...
Persistent link: https://www.econbiz.de/10009486852
Applied researchers often test for the difference of the variance of two investment strategies;in particular, when the investment strategies under consideration aim to implementthe global minimum variance portfolio. A popular tool to this end is the F-test for theequality of variances....
Persistent link: https://www.econbiz.de/10009486993
Many statistical applications require an estimate of a covariance matrix and/or its inverse.When the matrix dimension is large compared to the sample size, which happensfrequently, the sample covariance matrix is known to perform poorly and may suffer fromill-conditioning. There already exists...
Persistent link: https://www.econbiz.de/10009486994
This paper reviews important concepts and methods that are useful for hypothesis testing.First, we discuss the Neyman-Pearson framework. Various approaches to optimalityare presented, including finite-sample and large-sample optimality. Then, some of the mostimportant methods are summarized, as...
Persistent link: https://www.econbiz.de/10005868540
Consider the problem of testing s hypotheses simultaneously. In order to deal with themultiplicity problem, the classical approach is to restrict attention to procedures that controlthe familywise error rate (FWE). Typically, it is known how to construct tests of the individualhypotheses, and...
Persistent link: https://www.econbiz.de/10005868541
Fund-of-funds (FoF) managers face the task of selecting a (relatively) small number ofhedge funds from a large universe of candidate funds. We analyse whether such a selectioncan be successfully achieved by looking at the track records of the available funds alone,using advanced statistical...
Persistent link: https://www.econbiz.de/10005868542
Consider the problem of testing s hypotheses simultaneously. In this paper, we derivemethods which control the generalized familywise error rate given by the probability ofk or more false rejections, abbreviated k-FWER. We derive both single-step and stepdownprocedures that control the k-FWER in...
Persistent link: https://www.econbiz.de/10005868702