The Variance Ratio (VR) Test
Wild Bootstrapped Variance Ratio Test for Autocorrelation in the Presence of Heteroskedasticity
... LM test is one of the most popular tests for ...LM test may be erroneous when there exist heteroskedastic errors in regression ...wild-bootstrapped variance ratio test for ...
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Variance Ratio Test in Pakistani Stock Market
... This study is an attempt to investigate the evidence of random walk on KSE-100, KSE-30, all-share index, KMI- 30 from Pakistan stock exchange (PSX) and 40 independent firms from randomly selected for the period from ...
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A Variance-Ratio Test of Random Walk in International Stock Markets
... Efficiency, Variance Ratio Test JEL Classification Number: G14 ...that test whether stock prices follow random walk as the topic interests a range of readers such as investors, and concern ...
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Building Confidence Intervals with Block Bootstraps for the Variance Ratio Test of Predictability
... multiple variance ratio test based on bootstrap techniques for the construction of empirical ...the variance ratio ...to test the null hypothesis of random ...
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Testing for the martingale hypothesis in Asian stock prices: evidence from a new joint variance ratio test
... joint variance ratio test which is a finite sample test based on the wild bootstrap ...conventional variance ratio tests in that its sampling distribution is approximated by a ...
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Do exchange rates follow random walks? A variance ratio test of the Zambian foreignexchange
... As noted previously, the ratios under heteroscedastic-consistent estimates also decrease with an increase in sample intervals. Owing to the high volatility of the USD/ZMK exchange rate, more credence should be given to ...
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Variance Ratio Tests of The Random Walk in The BRVM
... multiple variance ratio tests The Lo and MacKinlay variance ratio tests have two main ...individual variance ratios for specific aggreatation interval q , but the random walk hypothesis ...
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Testing the random walk hypothesis of stock indexes through variance-ratio
... 1. Variance Ratio Test for DAX The calculation was done using the Microsoft Excel, and the daily closing price of the 11 selected Stock ...period variance, calculates the variance of ...
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Weighted Bootstrap Approach for the Variance Ratio Tests: A Test of Market Efficiency
... This work is licensed under the Creative Commons Attribution International License (CC BY). http://creativecommons.org/licenses/by/4.0/ Abstract By means of Monte Carlo experiments using the weighted bootstrap, we ...
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Generalized Variance-Ratio Tests in the Presence of Statistical Dependence
... the test is exam- ined by considering the DGP of the increments to be either an autoregressive process of …rst or sixth order, or alternatively a …rst or a second order moving average process, where the errors ...
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Variance Ratio Testing for Fractional Cointegration in Presence of Trends and Trend Breaks
... rank test proposed by Johansen, Mosconi and Nielsen (hereinafter JMN: 2000), which takes also trend breaks into account, but neglects the possibility of fractional ...
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The efficiency of the crude oil markets: Evidence from variance ratio tests
... VR test is that the standard VR tests such as Lo and MacKinlay (1988) tests, which are based on asymptotic approximations, are biased (severe size distortions and low power) and right-skewed in finite samples, ...
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Variance Ratio Testing for Fractional Cointegration in Presence of Trends and Trend Breaks
... rank test proposed by Johansen, Mosconi and Nielsen (hereinafter JMN: 2000), which takes also trend breaks into account, but neglects the possibility of fractional ...
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The Variance Ratio Statistic at Large Horizons
... the variance ratio statistic at large ...The test is shown to be consistent against a variety of relevant mean reverting alternatives when k/n → ...to test for mean reverting ...
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The Variance Ratio Statistic at large Horizons
... using the V R statistic without compromising either its finite sample size properties or its large sample power properties. With this backdrop, we provide several contributions to the literature. First, it is ...
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Wavelet-based color modification detection based on variance ratio
... 4.3 Forged color region detection For this paper, we generated four forged color images using Adobe Photoshop CS4 (64 bit) as shown in Fig. 6. The castle in “sample 1” was altered with a 180° hue shift, and the poster on ...
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The Laplace Likelihood Ratio Test for Heteroscedasticity
... A test for a constant variance after partitioning the residuals, suitable for observations from a distribution with fatter tails than a normal, can also be used to check for white ...
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A statistical test on the local effects of spatially structured variance
... The variance in a region does not deviate markedly from its global ...The variance in a region deviates from overall variance ...calculated ratio of these two averages then forms a test ...
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Stock Return Predictability by using Market Ratio, Trading Volume, and Stock Variance
... the test: (1) Not all of 5 financial ratios used as predictor able to predict return; (2) Return predictability is specific to sector and there are few sectors can be predicted, but there are few sectors that can ...
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Stock Return Predictability by using Market Ratio, Trading Volume, and Stock Variance
... stock variance shows that stock variance has a positive significant effect to stock return ...F test on model 1 has probability below 5% and R-Squared in Indonesia is ...(book-to-market ratio, ...
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