Download or read book Testing Random Walk Hypothesis Using Variance Ratios written by Mallahe Widanaralalage Leslie Chandrakantha and published by . This book was released on 1990 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Variance Ratio Tests of the Random Walk Hypothesis for European Emerging Stock Markets written by Graham Smith and published by . This book was released on 2000 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Size and Power of the Variance Ratio Test in Finite Samples written by Andrew Wen-Chuan Lo and published by . This book was released on 1988 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: We examine the finite sample properties of the variance ratio test of the random walk hypothesis via Monte Carlo simulations under two null and three alternative hypotheses. These results are compared to the performance of the Dickey-Fuller t and the Box-Pierce Q statistics. Under the null hypothesis of a random walk with independent and identically distributed Gaussian increments, the empirical size of all three tests are comparable. Under a heteroscedastic random walk null, the variance ratio test is more reliable than either the Dickey-Fuller or Box-Pierce tests. We compute the power of these three tests against three alternatives of recent empirical interest: a stationary AR(1), the sum of this AR(1) and a random walk, and an integrated AR( 1). By choosing the sampling frequency appropriately, the variance ratio test is shown to be as powerful as the Dickey-Fuller and Box-Pierce tests against the stationary alternative, and is more powerful than either of the two tests against the two unit-root alternatives.
Download or read book On the Asymptotic Power of the Variance Ratio Test written by Rohit Deo and published by . This book was released on 2008 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: The variance ratio test statistic, which is based on k-period differences of the data, iscommonly used in empirical finance and economics to test the random walk hypothesis. We obtain the asymptotic power function of the variance ratio test statistic when the differencing period k is increasing with the sample size n such that k/n ' acute; gt; 0. We show that the test is inconsistent against a variety of mean reverting alternatives, confirm the result in simulations, and then characterise the functional form of the asymptotic power in terms of acute; and these alternatives.
Download or read book Variance Ratio Tests of the Random Walk Hypothesis for European Emerging Stock Markets written by Graham Smith (Economist.) and published by . This book was released on 1998 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book On the Use of Variance Ratios in the Analysis of Nonstationary Time Series written by M. W. Leslie Chandrakantha and published by . This book was released on 1989 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A New Variance Ratio Test of Random Walk in Emerging Markets written by Osamah M. Al-Khazali and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Using Wright's (2000) nonparametric variance-ratio (VR) test, we revisit the empirical validity of the random walk hypothesis in eight emerging markets in the Middle East and North Africa (MENA). After correcting for measurement biases caused by thin and infrequent trading prevalent in nascent and small stock markets, we cannot reject the random walk hypothesis for the MENA markets. We conclude that Wright's nonparametric VR test is appropriate for emerging stock markets, and argue that our findings can reconcile previously contradictory results regarding the efficiency of MENA markets.
Download or read book Subsampling written by Dimitris N. Politis and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 359 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since Efron's profound paper on the bootstrap, an enormous amount of effort has been spent on the development of bootstrap, jacknife, and other resampling methods. The primary goal of these computer-intensive methods has been to provide statistical tools that work in complex situations without imposing unrealistic or unverifiable assumptions about the data generating mechanism. This book sets out to lay some of the foundations for subsampling methodology and related methods.
Download or read book A Non Random Walk Down Wall Street written by Andrew W. Lo and published by Princeton University Press. This book was released on 2011-11-14 with total page 449 pages. Available in PDF, EPUB and Kindle. Book excerpt: For over half a century, financial experts have regarded the movements of markets as a random walk--unpredictable meanderings akin to a drunkard's unsteady gait--and this hypothesis has become a cornerstone of modern financial economics and many investment strategies. Here Andrew W. Lo and A. Craig MacKinlay put the Random Walk Hypothesis to the test. In this volume, which elegantly integrates their most important articles, Lo and MacKinlay find that markets are not completely random after all, and that predictable components do exist in recent stock and bond returns. Their book provides a state-of-the-art account of the techniques for detecting predictabilities and evaluating their statistical and economic significance, and offers a tantalizing glimpse into the financial technologies of the future. The articles track the exciting course of Lo and MacKinlay's research on the predictability of stock prices from their early work on rejecting random walks in short-horizon returns to their analysis of long-term memory in stock market prices. A particular highlight is their now-famous inquiry into the pitfalls of "data-snooping biases" that have arisen from the widespread use of the same historical databases for discovering anomalies and developing seemingly profitable investment strategies. This book invites scholars to reconsider the Random Walk Hypothesis, and, by carefully documenting the presence of predictable components in the stock market, also directs investment professionals toward superior long-term investment returns through disciplined active investment management.
Download or read book The Variance Ratio Test with Stable Paretian Errors written by Y. K. Tse and published by . This book was released on 2004 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper examines the distribution of the overlapping variance ratio (OVR) statistic when the errors are distributed with thick tails as described by the family of stable Paretian distributions. The asymptotic distribution of the OVR statistic, which depends on the characteristic exponent, can be estimated using simulation. It is found that the convergence of the distribution of the OVR statistic to its asymptotic limit is extremely slow. Thus, the asymptotic results will not be able to provide any useful approximation in finite samples. To facilitate the OVR statistic as a test for the random walk hypothesis, the tail quantiles are estimated for several finite sample sizes.
Download or read book International Business Concepts Methodologies Tools and Applications written by Management Association, Information Resources and published by IGI Global. This book was released on 2016-03-17 with total page 2441 pages. Available in PDF, EPUB and Kindle. Book excerpt: Business transactions and partnerships across borders have become easier than ever due to globalization and global digital connectivity. As part of this shift in the business sphere, managers, executives, and strategists across industries must acclimate themselves with the challenges and opportunities for conducting business globally. International Business: Concepts, Methodologies, Tools, and Applications presents the latest research innovations focusing on cross-cultural communications and training, international relations, multinational enterprises, outsourcing, international business strategies, and competitive advantage in the global marketplace. This publication is an exhaustive multi-volume work essential to academic and corporate libraries who serve researchers, scholars, business executives and professionals, and graduate-level business students.
Download or read book A Small Sample Overlapping Variance Ratio Test written by Y. K. Tse and published by . This book was released on 2004 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The null distribution of the overlapping variance-ratio (OVR) test of the random-walk hypothesis is known to be downward biased and skewed to the right in small samples. As shown by Lo and MacKinlay (1989), the test under-rejects the null on the left tail seriously when the sample size is small. This property adversely affects the applicability of the OVR test to macroeconomic time series, which usually have rather small samples. In this paper, we propose a modified overlapping variance-ratio statistic and derive its exact mean under the normality assumption. We propose to approximate the small-sample distribution of the modified statistic using a beta distribution that matches the (exact) mean and the (asymptotic) variance. A Monte Carlo experiment shows that the beta approximation performs well in small samples.
Download or read book Handbook of Research on Strategic Developments and Regulatory Practice in Global Finance written by Olgu, Özlem and published by IGI Global. This book was released on 2014-11-30 with total page 459 pages. Available in PDF, EPUB and Kindle. Book excerpt: The global financial crisis has called to attention the importance of financial development to economic growth as modern countries continue to struggle with debt, unemployment, and slow growth. However, a lack of agreement on how to define and measure financial development slows the development of global financial systems and markets. The Handbook of Research on Strategic Developments and Regulatory Practice in Global Finance creates a common framework for not only identifying but discussing the key factors in establishing a strong global market and financial system. This book will be a valuable reference for those interested in an in-depth understanding of the financial markets and global finance, including academics, professionals, and government agencies and institutions.
Download or read book Effects of Using Dependent and Independent Differences in Tests of Random Walk Models Against Regression Models written by M. W. Leslie Chandrakantha and published by . This book was released on 1990 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Random Walk Down Wall Street The Time Tested Strategy for Successful Investing Ninth Edition written by Burton G. Malkiel and published by W. W. Norton & Company. This book was released on 2007-12-17 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt: Updated with a new chapter that draws on behavioral finance, the field that studies the psychology of investment decisions, the bestselling guide to investing evaluates the full range of financial opportunities.
Download or read book Econometric Analysis of Weak Form of Market Efficiency written by Uttam B Sapate and published by Educreation Publishing. This book was released on with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: Econometric Analysis of Weak Form of Market Efficiency This book "Econometric Analysis of Weak Form of Market Efficiency" is an outcome of doctoral research work carried out on a large amount of stock market data using MATLAB software. It is a unique study wherein a battery of econometric tests has been applied to test the Indian stock market's weak form efficiency. This book consists of 6 chapters describing the concepts of market efficiency, econometric analysis and outcomes of the study. Each chapter deals with complex mathematical terminology in lucid and simple language for better understanding. This books aims at providing advance knowledge to the researches for application of econometric techniques to ascertain market efficiency. However, at the same time it is useful as a practical guide to the graduate / post graduate students of management, economics, and securities markets and engineering for carrying out desk research using MATLAB handling large amount of secondary data. The research outcomes are expected to be guiding force to investors, academicians, researchers in many ways wherein this work can further be extended.
Download or read book Recent Advances in Applied Probability written by Ricardo Baeza-Yates and published by Springer Science & Business Media. This book was released on 2006-02-28 with total page 497 pages. Available in PDF, EPUB and Kindle. Book excerpt: Applied probability is a broad research area that is of interest to scientists in diverse disciplines in science and technology, including: anthropology, biology, communication theory, economics, epidemiology, finance, geography, linguistics, medicine, meteorology, operations research, psychology, quality control, sociology, and statistics. Recent Advances in Applied Probability is a collection of survey articles that bring together the work of leading researchers in applied probability to present current research advances in this important area. This volume will be of interest to graduate students and researchers whose research is closely connected to probability modelling and their applications. It is suitable for one semester graduate level research seminar in applied probability.
