Linear Regression Models

literaturas que apresentavam essa relação e algumas foram transcritas nesse trabalho. E por fim, para mostrar a aplicabilidade da estatística a gestão de portos, utilizando o programa R, foram feitas duas análises, uma de série temporal e outra de regressão linear, utilizando dados portuários. O ambiente competitivo em que os portos estão contextualizados exige o correto planejamento do desenvolvimento portuário de forma a oferecer infraestrutura e serviços adequados à atual realidade,…

Fepagro RS-10) e densidades da simuladora (Cobb), mais uma testemunha sem sua presença. As densidades de Cobb variaram de 5 a 36 plantas m-2. Os dados de perdas percentuais de produtividade das cultivares foram ajustados ao modelo de regressão não linear da hipérbole retangular. O modelo da hipérbole estimou em 6,8 e 5,9%, respectivamente, as perdas de produtividade sofridas por IAS 5 e Fepagro RS-10 quando a densidade da simuladora de plantas concorrentes se aproxima de zero.…

thermoelectric plant of Companhia Siderúrgica Nacional, by developing an evaluation model based on RNA. The methodology highlights the main factors that will govern the model a system based on artificial neural networks, which are: selection of input variables, number of variables, network architecture, training, forecasting output the application in order to predict the efficiency energy in power plants. The model presented here was developed from the architecture MLP (Multi Layer…

analyse the Portuguese experience in more detail. First, we Data and methods The analyses are based on statistics from official sources or from publications based on these sources. The statistical techniques are ordinary least-square multiple regression in the case of regional data, and Box-Jenkins' transfer function analysis in the case of time series. The program Micro-TSP (version 7.0) was used for all the analyses. For the regional analysis, the following data were obtained for…

.................................................................... 16 4.1.2 - COMO OBTER GRÁFICO DE PONTOS (SCATTERPLOT) ................. 16 4.1.3 - COMO OBTER O COEFICIENTE DE CORRELAÇÃO DE PEARSON ............ 18 4.1.4 - COMO FAZER REGRESSÃO LINEAR SIMPLES............................................. 19 4.2 - VARIÁVEIS CATEGÓRICAS X CATEGÓRICAS ................................................. 22 4.2.1 - COMO VERIFICAR A EXISTÊNCIA DE ASSOCIAÇÃO ENTRE VARIÁVEIS CATEGÓRICAS: Teste…

1,58 265,86 1,59 315,74 1,59 365,68 1,58 415,70 1,58 465,66 1,59 515,60 1,58 GRÁFICO 1- Período x massa *Análise do gráfico: [21/10/2008 17:34 "/Graph1" (2454760)] Linear Regression for Data1_B: Y = A + B * X Parameter Value Error ------------------------------------------------------------ A 1,58053 0,00353 B 8,49327E-6 1,08891E-5 ------------------------------------------------------------ R SD N P…

subordinates’ satisfaction, commitment, motivation, and effectiveness (engagement). Design/methodology/approach – A multiple-respondents survey, aiming at CEOs and their immediate subordinates, was conducted. Factor analysis, correlations and moderated regression analysis were used in order to reach conclusions. Findings – Two leadership dimensions are found to be most influential: being a good manager/mentor and articulating vision. Although good manager/mentor characteristics prove…

Regressão múltipla stepwise e hierárquica, Supressão, Complementaridade, Redundância, Interação, Psicologia Organizacional. Abstract Stepwise and hierarchical multiple regression in organizational psychology: Applications, problemas and solutions. This article discusses applications of stepwise and hierarchical multiple regression analyses to research in organizational psychology. Strategies for identifying type I and II errors, and solutions to potential problems that may arise from…

BIRTH TO TWO YEARS OF AGE TO BREED BRAHMAN CATTLE USING REGRESSION MODELS RANDOM ABSTRACT - The objective of this study was to estimate covariance functions using random regression models for repeated measures analysis of weights of Brahman cattle in Brazil. Genetic parameters were estimated for 88,788 records from birth to 744 days of age of 17,499 animals from the database of the Brazilian Association of Zebu Breeders (ABCZ). The models included the random additive direct…

assessment of mine pillar stability (the local mine-stiffness concept) proposed by Starfield and Fairhurst [8] and Starfield and Wawersik [9], which has been further developed by Salamon [10], is an implicit application of the method. These analytical models are for regular long pillar arrays (constant room spans and constant pillar widths). The interactive method of design of mine pillars proposed by S/irkk~i [1 1] is an explicit application of the approach. This author has shown how…