Bücher von Eduardo Corbacho

There are too many statistical programs but SPSS is one of the most important of them. This work tries to provide to the reader the necessary knowledge for using this program at the same time that a widely quantity of exercises are solved step to step. Moreover some simple notes about the theory about the corresponding chapter studied are given. The book is centered in the study and calculations related with basic concepts in statistics and sampling (14 exercises solved), descriptive statistic (9 exercises solved), confidence intervals and hypothesis test (14 exercises solved), analysis of variance (10 exercises solved), simple and multiple linear regression (14 exercises solved), analysis of covariance (4 exercises solved), Chi-square test (8 exercises solved) and non-parametric statistic (10 exercises solved).

The method of approximation by means of radical functions of odd index approximates an arbitrary function from the knowledge of its values, or of its approximate values, in a set of points. The main objective of this book is to show the scientific community how radical functions of odd index can be used to approximate continuous functions, Riemann-integrable, Lebesgue-integrable, and measurable functions. This book will also show how these radical functions can be used for the approximation of integrals of the mentioned functions. The interpolation problem is also studied. The calculations used are not impressive because of their difficulty but because of the importance they can have in applications that require approximations to a function or its integral in an interval [a,b].