PANDA – Practical Analysis of Nutritional Data
Posted by Armando Brito Mendes | Filed under estatística, materiais ensino, software, visualização
Bom livro sobre análise de dados e testes estatísticos
Chapter 1 – USING NUTRITIONAL DATA
Chapter 2 – DATA CLEANING
Chapter 3 – ONE-WAY ANALYSIS
Chapter 4 – TWO-WAY ANALYSIS
Chapter 5 – MULTI-WAY ANALYSIS
Chapter 6 – SUBMODULES
Chapter 7 – ASSESS YOUR UNDERSTANDING
Chapter 8 – KENYA REAL WORLD ANALYSIS
Building and presenting a situation analysis
Child Feeding Practices
Tags: análise de dados, decisão médica, Estat Descritiva, IBM SPSS Statistics, inferência, software estatístico
Determining the Number of Components and Factors Using Parallel Analysis and Velicer’s MAP Test
Posted by Armando Brito Mendes | Filed under estatística, software, visualização
Softwere para análise do nº de componentes em ACP e AF
Popular statistical software packages do not have the proper procedures for determining the number of components or factors in correlation matrices. Parallel analysis and Velicer’s minimum average partial (MAP) test are validated procedures that are widely recommended by statisticians. This paper described brief and efficient programs for conducting parallel analyses and the MAP test using SPSS, SAS, and MATLAB.
Métodos para facilitar a interpretação da AFE
Scale development using popular statistical software packages often produces results that are baffling or misunderstood by many users, which can lead to inappropriate substantive interpretations and item selection decisions. High internal consistencies do not indicate unidimensionality; item-total correlations are inflated because each item is correlated with its own error as well as the common variance among items; and the default number-of-eigenvalues-greater-than-one rule, followed by principal components analysis and varimax rotation, produces inflated loadings and the possible appearance of numerous uncorrelated factors for items that measure the same construct (Gorsuch, 1997a, 1997b). Concerned investigators may then neglect the higher order general factor in their data as they use misleading statistical output to trim items and fashion unidimensional scales.
These problems can be circumvented in exploratory factor analysis by using more appropriate factor analytic procedures and by using extension analysis as the basis for adding items to scales. Extension analysis provides correlations between nonfactored items and the factors that exist in a set of core items. The extension item correlations are then used to decide which factor, if any, a prospective item belongs to. The decisions are unbiased because factors are defined without being influenced by the extension items. One can also examine correlations between extension items and any higher order factor(s) in the core items. The end result is a comprehensive, undisturbed, and informative picture of the correlational structure that exists in a set of core items and of the potential contribution and location of additional items to the structure.
Tags: análise de dados, captura de conhecimento, decisão médica, desnvolvimento de software, IBM SPSS Statistics, software estatístico
Data Analysis Examples
Posted by Armando Brito Mendes | Filed under estatística, software
Bons exemplos de análises complexas com vários softwares
The pages below contain examples (often hypothetical) illustrating the application of different statistical analysis techniques using different statistical packages. Each page provides a handful of examples of when the analysis might be used along with sample data, an example analysis and an explanation of the output, followed by references for more information. These pages merely introduce the essence of the technique and do not provide a comprehensive description of how to use it.
Tags: captura de conhecimento, data mining, decisão médica, IBM SPSS Statistics, inferência, inquéritos, R-software, software estatístico
Pentaho – business analytics
Posted by Armando Brito Mendes | Filed under software
Software para BI e data werehouse
Better Together: Pentaho tightly couples data integration with business analytics in a modern platform that brings together IT and business users to easily access, visualize and explore all data that impacts business results
Tags: análise de dados, captura de conhecimento, data mining, decisão médica, inferência
Medical Algorithms
Posted by Armando Brito Mendes | Filed under SAD - DSS
Site com centenas de algoritmos usados em apoio à decisão médica
Medal.org Limited owns and operates the largest international web-based knowledge base of medical algorithms and computational procedures for medical treatment and administration. Medal.org is the largest provider of medical algorithms and the biggest player in the medical algorithms market, with a background of 5 years of building up its internet presence, book series, and professional sponsorship.
Tags: bioinformatica, decisão médica
