34 documents found, page 1 of 4
Handling outliers in panel data models: a robust approach
Rocha, Anabela; Miranda, M. Cristina; Souto de Miranda, ManuelaReal-world data often violate the conditions assumed by classical estimation methods. One reason for this failure may be the presence of observations with a low probability of belonging to the same distribution as the majority of the data, known as outliers. Outliers can appear in different forms, such as casewise and cellwise outliers. The results of classical estimation methods, particularly those based on le...
Flipped classroom to promote active learning in statistics teaching
Rocha, Anabela; Miranda, M. CristinaThe flipped classroom model has emerged as a transformative approach in higher education, shifting the traditional teaching paradigm to enhance student engagement and learning outcomes. In this model, instructional content is delivered outside of class, often through video lectures, allowing in-class time to be devoted to active learning activities, such as discussions, problem-solving, and collaborative projec...
Handling outliers in panel data models: a robust approach
Rocha, Anabela; Miranda, M. CristinaReal-world data often violate the conditions assumed by classical estimation methods. One reason for this failure may be the presence of observations with a low probability of belonging to the same distribution as the majority of the data, known as outliers. Outliers can appear in different forms, such as casewise and cellwise outliers. The results of classical estimation methods, particularly those based on le...
Panel data analysis with R
Rocha, Anabela; Miranda, M. CristinaPanel data is broadly used in several fields like finance, biology, environment, etc. Cross sectional data refers to registry of some data set referring to units in one particular moment (observation of some variables from individuals, firms, banks, usually independent). A different type of data (usually dependent) is when data of one or more variables are collected over time (time- series). In many situations,...
Robust Estimation for the Random Effects Panel Data Models
Rocha, Anabela; Miranda, M. CristinaPanel data have been increasingly used over the past decades. They arise in various fields of study like economics, biology, marketing, finance, the environment, and others. Particularly in domains of economics and finance, panel (or longitudinal) data are frequently used. Usually, research is based on empirical studies, where the estimation of the parameters is usually obtained with classical methodologies. Re...
The Interaction Among Capital Structure, Dividend Policy and Ownership Structure
Vieira, Elisabete S.; Rocha, Anabela; Miranda, CristinaThe objective of this study is to explore the interrelationship among ownership structure, capital structure and dividend policy, because prior empirical studies analysed the capital structure or the dividend policy in isolation, but these two corporate finance decisions can be interrelated, affecting each other. Finding this gap, this paper analyses the interrelationship among ownership structure, capital stru...
The interaction among capital structure, dividend policy and ownership structur...
Vieira, Elisabete; Rocha, Anabela; Miranda, Cristina M.The objective of this study is to explore the interrelationship among ownership structure, capital structure and dividend policy, because prior empirical studies analysed the capital structure or the dividend policy in isolation, but these two corporate finance decisions can be interrelated, affecting each other. Finding this gap, this paper analyses the interrelationship among ownership structure, capital stru...
Adaptação transcultural do SATS-36 para estudantes do 3º ciclo do ensino básico...
Morais, Ana Julieta; Freitas, Adelaide; Sá-Couto, Pedro; Rocha, AnabelaA atitude dos estudantes em relação à Estatística é um tema amplamente investigado a nível do ensino universitário mas escasso em estudantes do 3º ciclo do ensino básico (idade esperada: 12-15 anos). Neste trabalho foi efetuada uma adaptação transcultural, do inglês para o português (europeu) e para estudantes daquele ciclo de escolaridade, da escala de atitudes em relação à Estatística SATS-36© (Survey of Atti...
Estimação robusta de modelos com dados em painel
Rocha, Anabela; Miranda, M. CristinaPanel data modeling is a problem that arises across several areas, namely demography, economics, finance, biology, climatology and environment. In empirical studies, the estimation of the parameters of these models is usually done based on classical estimation methods. The presence of outliers in panel data is a frequent situation in data sets. real data in different areas and can drastically affect estimates o...
The interaction among capital structure, dividend policy and ownership structur...
Vieira, Elisabete S.; Rocha, Anabela; Miranda, M. CristinaThe objective of this study is to explore the interrelationship among ownership structure, capital structure and dividend policy, because prior empirical studies analysed the capital structure or the dividend policy in isolation, but these two corporate finance decisions can be interrelated, affecting each other. Finding this gap, this paper analyses the interrelationship among ownership structure, capital stru...