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This paper considers the problem of testing a finite number of moment inequalities. We propose a two-step approach. In the first step, a confidence region for the moments is constructed. In the second step, this set is used to provide information about which moments are "negative." A...
Persistent link: https://www.econbiz.de/10010354626
test is a consistent test. We also establish the asymptotic validity of a bootstrap procedure which is used to better …
Persistent link: https://www.econbiz.de/10010730130
restrictions on parameters as well as a bootstrap technique to account for the bandwidth’s influence. Our new methods are simple to …
Persistent link: https://www.econbiz.de/10010703138
literature for regression models subject to error heteroskedasticity, the Edgeworth expansion for the pairs bootstrap that we …We propose a bootstrap method for statistics that are a function of multivariate high frequency returns such as … realized regression, covariance and correlation coefficients. We show that the finite sample performance of the bootstrap is …
Persistent link: https://www.econbiz.de/10011052229
Since the advent of heteroskedasticity-robust standard errors, several papers have proposed adjustments to the original … samples. We propose a class of alternative heteroskedasticity-robust tests of linear hypotheses based on an Edgeworth …, moderate, and severe levels of heteroskedasticity. …
Persistent link: https://www.econbiz.de/10010597169
Several tests for heteroskedasticity in linear regression models are examined. Asymptoticrobustness to heterokurticity … between nominal and actual finite sample significance levels. The use of the bootstrap overcomes this problem for general … approaches that lead to asymptotically pivotal test statistics. Power comparisons are made for bootstrap tests and modified …
Persistent link: https://www.econbiz.de/10005511948
tailored to handle heteroskedasticity. Our results show that weighted bootstrap methods can be successfully used to estimate …This paper uses Monte Carlo simulation analysis to study the finite-sample behavior of bootstrap estimators and tests … test and of Bartlett and Edgeworth-corrected tests. The bootstrap test was found to be robust against unfavorable …
Persistent link: https://www.econbiz.de/10005511950
, residual-based bootstrap methods are introduced for asymptotically refined approximations to the finite sample critical values … conditions are not fully met, bootstrap may lead to unstable critical values that change significantly with the alternative …, whereas when all conditions are met, bootstrap critical values are very stable, approximate much better the finite sample …
Persistent link: https://www.econbiz.de/10011190729
This paper shows how revealed preference relations, observed under general budget sets, can be extended using closure operators which impose certain assumptions on preferences. Common extensions are based on the assumption that preferences are convex and/or monotonic, but we also consider...
Persistent link: https://www.econbiz.de/10009579263
I expose the risk of false discoveries in the context of multiple treatment effects. A false discovery is a nonexistent effect that is falsely labeled as statistically significant by its individual t-value. Labeling nonexistent effects as statistically significant has wide-ranging academic and...
Persistent link: https://www.econbiz.de/10009740949