Transforming variables to central normality

Transforming Variables for Normality and Linearity – When, How, Why and Why Not's

Power transformations are often suggested as a means to "normalize" univariate data which may be skewed left or right, or as a way to "straighten out" a bivariate curvilinear relationship in a regression model. This talk will focus on identifying when transformations are appropriate and how to choose the proper transformations using SAS® and new features of the ODS. There is also a discussion o...

Asymptotic Normality in Varying-Coefficient Errors-in-Variables Models with Missing Response Variables

This article is concerned with the estimation of a varying-coefficient regression model when the explanatory variables are measured with additive errors and the response variable is sometimes missing. Estimated coefficient function in complete observational data and interpolation data respectively, and all the proposed estimators for the coefficient function are proved to be asymptotic normalit...

Central and Local Limit Theories in Markov Dependent Random Variables

Societal variables are central to effective HIV intervention models.

Editor – The importance of diabetic retinopathy as a cause of blindness has increased because of longevity and decline in the other preventable causes of blindness in developing countries (1). A diabetic can have a serious eye disease and not even know it until irreversible vision loss has occurred. It is estimated that by the year 2010 the world diabetic population will have doubled, reaching ...

Transforming Conditional Rewrite Systems with Extra Variables into Unconditional Systems

Deterministic conditional rewrite systems are interesting because they permit extra variables on the right-hand sides of the rules. If such a system is quasi-reductive, then it is terminating and has a computable rewrite relation. It will be shown that every deterministic CTRS R can be transformed into an unconditional TRS U(R) such that termination of U(R) implies quasi-reductivity of R. The m...