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Introduzione: L'inizio dell'abitudine al fumo avviene prevalentemente durante l'adolescenza e può essere influenzato dalle reti di relazioni che si creano a scuola. Il presente studio ha l'obiettivo di ricostruire le reti di relazioni tra gli studenti del primo e secondo anno di una scuola...
Persistent link: https://www.econbiz.de/10011019785
Maxima is a free and open-source computer algebra system (CAS), namely, software that can perform symbolic computations such as solving equations, determining derivatives of functions, obtaining Taylor series, and manipulating algebraic expressions. In this presentation, I discuss the Maxima...
Persistent link: https://www.econbiz.de/10011019786
En la actualidad existen diferentes programas en el mercado que permiten realizar análisis de información geográfica. Sin embargo, estos programas presentan limitaciones para realizar análisis geográficos a partir de datos estadísticos, debido a que no siempre aceptan algoritmos que...
Persistent link: https://www.econbiz.de/10011019787
After one fits regression models, it is quite common to produce out-of-sample forecasts to evaluate the predictive accuracy of the model or simply to estimate the expected behavior of one or more dependent variables (assuming that the model is valid be yond the estimation sample). I selected a...
Persistent link: https://www.econbiz.de/10011019788
Aplicaciones en Economía Ciencias Sociales con Stata is the first publication in Spanish produced by Stata Press. The content is the result of a selection of individual contributions by a diverse group of authors with different areas of knowledge who illustrate the use of a variety of tools...
Persistent link: https://www.econbiz.de/10011019789
Entre 2001 y 2008, la manera en que el gobierno incentivaba a que las empresas privadas en México aumentaran su actividad innovadora relacionada con la investigación científica y con el desarrollo tecnológico era a través de su programa EFIDE T, acrónimo correspondiente a Programa de...
Persistent link: https://www.econbiz.de/10011019790
El aprendizaje de estadística o econometría en la actualidad implica evaluar la aplicación de métodos en programas (software) de análisis estadístico. En términos usuales esta evaluación se lleva a cabo a partir de una (1) base de datos y una(s ) pregunta(s) que genera(n) una(s)...
Persistent link: https://www.econbiz.de/10011019791
Several econometric software offer portfolio management tools for practitioners and researchers. For example, MatLab and R offer a great variety of tools for the simulation, optimization, and analysis of financial time series. Stata, together with Mata, offers powerful programming tools for the...
Persistent link: https://www.econbiz.de/10011019792
In this presentation, I discuss two applications of the vec commands. First, I use the cointegrating VAR approach discussed in Garratt et al. (2006) to fit a vector error-correction model. In contrast with the application of the traditional Johansen statistical restrictions for the...
Persistent link: https://www.econbiz.de/10011019793
Las pruebas de tamizaje se usan ampliamente en salud pública para identificar fases tempranas de enfermedad. Generalmente los resultados del tamizaje se categorizan como positivo o negativo, y es común que sólo se evalúe el resultado positivo, lo cual puede ocasionar el denominado sesgo de...
Persistent link: https://www.econbiz.de/10011019794