CoDa-course online is the online version of the CoDaCourse imparted at the University of Girona. This course is accredited by the Association for Compositional Data (CoDa-Association) since 2017 and by the International Association for Mathematical Geosciences (IAMG) since 2011. It was supported by the Statistical Modelling Society (SMS) and the International Association for Statistical Computing (IASC). Course development, instruction, evaluation and other educational processes are tailored to the distance learner.

## Structure:

- The CoDa course is structured into five units:
- Unit 1. The nature of compositional data (first pages)
- Unit 2. The Euclidian space structure of the simplex (first pages)
- Unit 3. Exploratory compositional data analysis (first pages)
- Unit 4. Logratio analysis of compositions: basic multivariate methods (first pages)
- Unit 5. Logratio analysis of compositions: grouped data (first pages)

- Each unit includes some guided activities to consolidate and develop the theoretical and practical concepts introduced in corresponding chapter. It is highly recommended that students do these activities.
- Each chapter concludes with a set of exercises that students must do and submit for evaluation.
- All chapters are accompanied by an extensive and current bibliography.

## Specific material for the course:

- A Course Textbook is provided.
- All data files required for the course activities are made available to those enrolled.

## Course development:

- A teacher-tutor will be assigned to each student enrolled in the course.
- Those enrolled in the course can send in any specific queries via email. Inquiries will normally be answered within a week.
- The evaluation exercises sent in by the student will normally be evaluated and corrected within 15 days.
- Each student can set their own pace based on their personal time commitments. Commencing from the date of registration, each student has one year in which to complete the practical worksheets, the course activities and evaluation exercices.

## All course instructors are expert researchers in the field of CoDA:

- Juan-José Egozcue-Rubí, PhD in Physics. Full Professor of the Department of Applied Mathematics III of the Polytechnic University of Catalonia.
- Vera Pawlowsky-Glahn, PhD in Mathematics. Full Professor of the Computer Science, Applied Mathematics and Statistics Department of the University of Girona.
- Carles Barceló-Vidal, PhD in Statistics. Emeritus Professor of the Computer Science, Applied Mathematics and Statistics Department of the University of Girona.
- Pepus Daunis-i-Estadella, PhD in Statistics. Titular Professor of the Computer Science, Applied Mathematics and Statistics Department of the University of Girona.
- Jan Graffelman, PhD in Statistics. Titular Professor of Statistics and Operations Research Department the Polytechnic University of Catalonia.
- Josep-Antoni Martín-Fernández, PhD in Statistics. Titular Professor of the Computer Science, Applied Mathematics and Statistics Department of the University of Girona.
- Glòria Mateu-Figueras, PhD in Statistics. Associate Professor of the Computer Science, Applied Mathematics and Statistics Department of the University of Girona.
- Maribel Ortego, PhD in Mathematics. Associate Professor of the Department of Applied Mathematics III of the Polytechnic University of Catalonia.
- Javier Palarea-Albaladejo, PhD in Statistics. Senior Statistical Scientist of Biomathematics and Statistics Scotland (Scotland, UK).
- Santiago Thió Fernández-de-Henestrosa, PhD in Computer Science. Titular Professor of the Computer Science, Applied Mathematics and Statistics Department of the University of Girona.