Cuentos para pensar (Versión Hispanoamericana) (Biblioteca Jorge Bucay) (Spanish Edition)

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Jorge Bucay is a doctor and a psychotherapist. His books have been translated into more than 24 languages, and he has become one of the most influential thinkers of today's society. Convert currency. Add to Basket. Condition: New.

Language: Spanish. Brand new Book. Seller Inventory AAC More information about this seller Contact this seller. Seller Inventory BTE Seller Inventory Book Description Editorial Oceano de Mexico. Seller Inventory ZZN. Paperback or Softback. Llegar a la Cima y Seguir Subiendo. Seller Inventory BBS Book Description Condition: New.

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Brand New. Book Description Editorial Oceano de Mexico, Seller Inventory M Seller Inventory BD Jorge Bucay. Publisher: Editorial Oceano de Mexico , This specific ISBN edition is currently not available. View all copies of this ISBN edition:. Synopsis About this title The inner growth of human beings is something that never ceases. About the Author : Jorge Bucay is a doctor and a psychotherapist. Because, in practice, the response may not necessarily be normally distributed, we will extend our approach to the generalized linear model setup.

By simulation, we will show that not only in the case of discrete responses and very small experiments, the usual large sample approach for modeling generalized linear models may produce a very biased and variable estimators, but also that the Bayesian approach provides a very sensible results. Inference for quantile regression parameters presents two problems.

First, it is computationally costly because estimation requires optimising a non-differentiable objective function which is a formidable numerical task, specially with many number of observations and regressors. Second, it is controversial because standard asymptotic inference requires the choice of smoothing parameters and different choices may lead to different conclusions.


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Bootstrap methods solve the latter problem at the price of enlarging the former. We give a theoretical justification for a new inference method consisting of the construction of asymptotic pivots based on a small number of bootstrap replications. We show its usefulness to draw inferences on linear or non-linear functions of the parameters of quantile regression models. The existing methods for analyzing unreplicated fractional factorial experiments that do not contemplate the possibility of outliers in the data have a poor performance for detecting the active effects when that contingency becomes a reality.

There are some methods to detect active effects under this experimental setup that consider outliers. We propose a new procedure based on robust regression methods to estimate the effects that allows for outliers. We perform a simulation study to compare its behavior relative to existing methods and find that the new method has a very competitive or even better power.

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The relative power improves as the contamination and size of outliers increase when the number of active effects is up to four. The paper presents the asymptotic theory of the efficient method of moments when the model of interest is not correctly specified. The paper assumes a sequence of independent and identically distributed observations and a global misspecification. It is found that the limiting distribution of the estimator is still asymptotically normal, but it suffers a strong impact in the covariance matrix.


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A consistent estimator of this covariance matrix is provided. The large sample distribution on the estimated moment function is also obtained. These results are used to discuss the situation when the moment conditions hold but the model is misspecified. It also is shown that the overidentifying restrictions test has asymptotic power one whenever the limit moment function is different from zero. It is also proved that the bootstrap distributions converge almost surely to the previously mentioned distributions and hence they could be used as an alternative to draw inferences under misspecification.

Interestingly, it is also shown that bootstrap can be reliably applied even if the number of bootstrap replications is very small. It is well known that outliers or faulty observations affect the analysis of unreplicated factorial experiments. This work proposes a method that combines the rank transformation of the observations, the Daniel plot and a formal statistical testing procedure to assess the significance of the effects. It is shown, by means of previous theoretical results cited in the literature, examples and a Monte Carlo study, that the approach is helpful in the presence of outlying observations.

The simulation study includes an ample set of alternative procedures that have been published in the literature to detect significant effects in unreplicated experiments.

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The Monte Carlo study also, gives evidence that using the rank transformation as proposed, provides two advantages: keeps control of the experimentwise error rate and improves the relative power to detect active factors in the presence of outlying observations. Most of the inferential results are based on the assumption that the user has a "random" sample, by this it is usually understood that the observations are a realization from a set of independent identically distributed random variables.

However most of the time this is not true mainly for two reasons: one, the data are not obtained by means of a probabilistic sampling scheme from the population, the data are just gathered as they becomes available or in the best of the cases using some kind of control variables and quota sampling. For an excellent discussion about the kind of considerations that should be made in the first situation see Hahn and Meeker and a related comment in Aguirre For the second problem there is a book about the topic in Skinner et a1.

In this paper we consider the problem of evaluating the effect of sampling complexity on Pearson's Chi-square and other alternative tests for goodness of fit for proportions. Out of this work come up several adjustments to Pearson's test, namely: Wald type tests, average eigenvalue correction and Satterthwaite type correction.

There is a more recent and general resampling approach given in Sitter , but it was not pursued in this study. Sometimes data analysis using the usual parametric techniques produces misleading results due to violations of the underlying assumptions, such as outliers or non-constant variances. In particular, this could happen in unreplicated factorial or fractional factorial experiments. To help in this situation alternative analyses have been proposed.

For example Box and Meyer give a Bayesian analysis allowing for possibly faulty observations in un replicated factorials and the well known Box-Cox transformation can be used when there is a change in dispersion.

Cuentos para pensar (Versión Hispanoamericana) (Biblioteca Jorge Bucay) (Spanish Edition) : Books

This paper presents an analysis based on the rank transformation that deals with the above problems. The analysis is simple to use and can be implemented with a general purpose statistical computer package. The procedure is illustrated with examples from the literature. A theoretical justification is outlined at the end of the paper. The article considers the problem of choosing between two possibly nonlinear models that have been fitted to the same data using M-estimation methods. An asymptotically normally distributed lest statistics using a Monte Carlo study.

Cuentos Para Pensar Versin Hispanoamericana Biblioteca Jorge Bucay Spanish Edition

We found that the presence of a competitive model either in the null or the alternative hypothesis affects the distributional properties of the tests, and that in the case that the data contains outlying observations the new procedure had a significantly higher power that the rest of the test. Fuller , Anderson , and Hannan introduce infinite moving average models as the limit in the quadratic mean of a sequence of partial sums, and Fuller shows that if the assumption of independence of the addends is made then the limit almost surely holds.

This note shows that without the assumption of independence, the limit holds with probability one. Moreover, the proofs given here are easier to teach. A test for the problem or choosing between several nonnested nonlinear regression models simultaneously is presented. The test does not require an explicit specification of a parametric family of distributions for the error term and has a closed form. The asymptotic dislribution of the generalized Cox test for choosing between two multivariate, nonlinear regression models in implicit form is derived.

The data is assumed to be generated by a model that need not be either the null or the non-null model. Some investigations of these characteristics are included.