• Class Number 4042
• Term Code 3430
• Class Info
• Unit Value 6 units
• Mode of Delivery In Person
• COURSE CONVENER
• Dr Le Chang
• LECTURER
• Dr Le Chang
• Class Dates
• Class Start Date 19/02/2024
• Class End Date 24/05/2024
• Census Date 05/04/2024
• Last Date to Enrol 26/02/2024
SELT Survey Results

Regression Modelling (STAT7038)

Regression Modelling is a course in applied statistics that studies the use of linear regression techniques for examining relationships between variables. The course emphasises the principles of statistical modelling through the iterative process of fitting a model, examining the fit to assess imperfections in the model and suggest alternative models, and continuing until a satisfactory model is reached. Both steps in this process require the use of a computer: model fitting uses various numerical algorithms, and model assessment involves extensive use of graphical displays. The R statistical computing package is used as an integral part of the course.

## Learning Outcomes

Upon successful completion, students will have the knowledge and skills to:

1. Demonstrate a thorough understanding of the R statistical computing language, particularly the graphical capabilities;
2. Fit simple linear regression models, interpret model parameters and relate theses back to the underlying research question;
3. Analyse and interpret relationships between a response variable and a covariate;
4. Analyse and interpret relationships between a response variable and several covariates;
5. Assess and refine simple and multiple linear regression models based on diagnostic measures, including identifying and discuss the implications of outlying and influential data points; and,
6. Explore and discuss a useful multiple linear regression model from a number of competing models.

## Research-Led Teaching

The material covered in this course covers established principles in statistical modelling. This course involves an intermediate level of programming with R, including model fitting, graphical analysis and prediction. In the lectures and computer labs, we will use real-life datasets to demonstrate the applications of regression modelling in R.

## Examination Material or equipment

The final exam will be centrally timetabled by Examinations, Graduations & Prizes prior to the examination period. Please check ANU Timetabling for further information. You will require a non-programmable scientific calculator for the duration of the exam. Details of the examination materials and conditions will be noticed to all students via Wattle and the examination office.

## Required Texts

Applied Linear Regression Models (4th Edition): by Michael H. Kutner, Christopher J. Nachtsheim, John Neter. ISBN: 9780073014661

The ebook can be found on ANU library https://library.anu.edu.au/record=b6852478. The ANU Library has been requested to make hard copies of this book available as a 2 hour or 2 day loan.

## Technology and Software

The application of modern statistical techniques requires familiarity with a statistical computing package. Examples provided in lectures, tutorials, and work related to the assignments will entail the use of the statistical computer packages R and RStudio, which are freely available at www.r-project.org and https://www.rstudio.com. The program code used for examples provided in lectures and tutorials will be available on the course Wattle site.

For students who would like additional help getting started with R, I also recommend:

• Chester Ismay and Albert Y. Kim. (2017) Modern Dive: An Introduction to Statistical and Data Sciences via R (freely available from http://moderndive.com).

## Staff Feedback

Students will be given feedback (through both verbal and written comments) in the following forms in this course:

• To the whole class during lectures.

• Within tutorials.

• Individually during consultation hours.

## Student Feedback

ANU is committed to the demonstration of educational excellence and regularly seeks feedback from students. Students are encouraged to offer feedback directly to their Course Convener or through their College and Course representatives (if applicable). Feedback can also be provided to Course Conveners and teachers via the Student Experience of Learning & Teaching (SELT) feedback program. SELT surveys are confidential and also provide the Colleges and ANU Executive with opportunities to recognise excellent teaching, and opportunities for improvement.

## Other Information

Support for Students

The University offers a number of support services for students. Information on these is available online from http://students.anu.edu.au/studentlife/

Communication via Email

If I, or anyone in the School, College or University administration, need to contact you, we will do so via your official ANU student email address, which you need to check regularly. If you have any questions for the teaching and course convenor make sure you email them using your ANU email address. Emails from personal email accounts will not be answered.

Announcements

Assessment Requirements

Any student identified, either during the current semester or in retrospect, as having used ghost writing services will be investigated under the University’s Academic Misconduct Rule.

Scaling

Your final mark for the course will be based on the raw marks allocated for each of your assessment items. However, your final mark may not be the same number as produced by that formula, as marks may be scaled. Any scaling applied will preserve the rank order of raw marks (i.e. if your raw mark exceeds that of another student, then your scaled mark will exceed the scaled mark of that student), and may be either up or down.

Referencing Requirements

In assignments and exams, students must appropriately reference any results, words or ideas that they take from another source which is not their own. A guide can be found at https://academicskills.anu.edu.au/resources/handouts/referencing-basics.

## Class Schedule

Week/Session Summary of Activities Assessment
1 Introduction. Getting started with R. Simple Linear Regression (revision). Parameter interpretation/estimation. No tutorials in week 1
2 Properties of least squares estimators. ANOVA.
3 Hypothesis testing and interval estimation in a SLR context. Prediction intervals.
4 Regression diagnostics (residual plots). Outliers and influential observations.
5 Scale transformations. Matrix approach to linear regression. Wattle Quiz
6 Introduction to Multiple Regression. Model interpretation and estimation. Submission of Assignment 1 via Wattle
7 Model interpretation continued
8 ANOVA for multiple regression. Sequential sum of squares.
9 Qualitative covariates in multiple regression.
10 Model diagnostics. Outlier detection. Types of residuals. Influence diagnostics. Multicollinearity.
11 Model selection and criteria for comparing models. Submission of Assignment 2 via Wattle
12 Course review.

## Tutorial Registration

Tutorials will be held weekly (starting from Week 2). Tutorials will be available on campus. Students should enroll in their tutorial using MyTimetable.

## Assessment Summary

Assessment task Value Due Date Return of assessment Learning Outcomes
Wattle Quiz 5 % 22/03/2024 22/03/2024 2,3
Assignment 1 15 % 28/03/2024 19/04/2024 1,2,3
Assignment 2 15 % 17/05/2024 30/05/2024 1,2,3,4,5
Final Examination 65 % 30/05/2024 27/06/2024 1,2,3,4,5,6

* If the Due Date and Return of Assessment date are blank, see the Assessment Tab for specific Assessment Task details

## Policies

ANU has educational policies, procedures and guidelines , which are designed to ensure that staff and students are aware of the University’s academic standards, and implement them. Students are expected to have read the Academic Integrity Rule before the commencement of their course. Other key policies and guidelines include:

## Assessment Requirements

The ANU is using Turnitin to enhance student citation and referencing techniques, and to assess assignment submissions as a component of the University's approach to managing Academic Integrity. For additional information regarding Turnitin please visit the Academic Skills website. In rare cases where online submission using Turnitin software is not technically possible; or where not using Turnitin software has been justified by the Course Convener and approved by the Associate Dean (Education) on the basis of the teaching model being employed; students shall submit assessment online via ‘Wattle’ outside of Turnitin, or failing that in hard copy, or through a combination of submission methods as approved by the Associate Dean (Education). The submission method is detailed below.

## Moderation of Assessment

Marks that are allocated during Semester are to be considered provisional until formalised by the College examiners meeting at the end of each Semester. If appropriate, some moderation of marks might be applied prior to final results being released.

## Participation

Course content delivery will take the form of on-campus lectures (with recordings available via echo360 on Wattle) and weekly on-campus tutorials. Participation is strongly encouraged in tutorials. Attendance at lectures and tutorials, while not compulsory, is expected in line with “Code of Practice for Teaching and Learning”, clause 2 paragraph (b).

## Examination(s)

Centrally administered examinations through Examinations, Graduations & Prizes will be timetabled prior to the examination period. Please check ANU Timetabling for further information. Any student identified, either during the current semester or in retrospect, as having used ghostwriting services will be investigated under the University’s Academic Misconduct Rule.

Value: 5 %
Due Date: 22/03/2024
Return of Assessment: 22/03/2024
Learning Outcomes: 2,3

Wattle Quiz

The students are to complete this quiz individually. The quiz will be designed to cover materials from Week 1 to Week 4 and is worth 5% of the final raw score. The quiz will open on 15 March (Friday) at 3:00 pm and close on 22 March (Friday) at 3:00 pm. Once the quiz is started it will need to be completed in a limited time period. One attempt per quiz is permitted. The quiz will consist of up to ten multiple choice questions or short-answer calculation questions. Each question in the quiz will be presented on a separate page and students can navigate backwards and forwards through the quiz. More specific details on the format and duration of each quiz will be announced on Wattle in Week 4. Solutions and feedbacks will be released upon the close of the quiz (22 March at 3:00 pm). Therefore, extensions for quizzes are not permitted under any circumstances.

Value: 15 %
Due Date: 28/03/2024
Return of Assessment: 19/04/2024
Learning Outcomes: 1,2,3

Assignment 1

The students are to complete this assignment individually. This assignment is designed to cover materials about Simple Linear Regression and is worth 15% of the final raw score. It will involve using R to analyse data from a case study, then organize and edit the R output and prepare a written report on your analyses, as well as some proofs. The assignment and its details will be made available on Wattle by 3:00 pm on 15 March and it is to be submitted online on Wattle via Turnitin. The assignment will be due in Week 6 on 28 March (Thursday) by 3:00 pm. The assignment will be returned by 19 April. Short individual feedback may be given with marks and may be available from the tutor by appointment. Submission of the assignment without an extension after the due date will not be permitted. If the assignment is not submitted by the due date, a mark of 0 will be awarded.

Value: 15 %
Due Date: 17/05/2024
Return of Assessment: 30/05/2024
Learning Outcomes: 1,2,3,4,5

Assignment 2

The students are to complete this assignment individually. This assignment is designed to cover materials about Multiple Regression and is worth 15% of the final raw score. It will involve using R to analyse data from a case study, then organize and edit the R output and prepare a written report on your analyses, as well as some proofs. The assignment and its details will be made available on Wattle by 3:00 pm on 3 May and it is to be submitted online on Wattle via Turnitin. The assignment will be due in Week 11 on 17 May (Friday) by 3:00 pm. The assignment will be returned by 30 May. Short individual feedback may be given with marks and may be available from the tutor by appointment. Submission of the assignment without an extension after the due date will not be permitted. If the assignment is not submitted by the due date, a mark of 0 will be awarded.

Value: 65 %
Due Date: 30/05/2024
Return of Assessment: 27/06/2024
Learning Outcomes: 1,2,3,4,5,6

Final Examination

The final examination is worth 65% of the overall score in the course and will be held during the university examination period at the end of semester. The final examination will be around 3 hours long and cover the entire syllabus. The exam will be centrally timetabled and details of the final examination timetable will be made available on the ANU Timetabling website. The final exam may consist of short-answer calculation questions and short-answer written questions. Further details on the exam (exam duration and format) will be made available by the end of Week 10.

Academic integrity is a core part of the ANU culture as a community of scholars. The University’s students are an integral part of that community. The academic integrity principle commits all students to engage in academic work in ways that are consistent with, and actively support, academic integrity, and to uphold this commitment by behaving honestly, responsibly and ethically, and with respect and fairness, in scholarly practice.

The University expects all staff and students to be familiar with the academic integrity principle, the Academic Integrity Rule 2021, the Policy: Student Academic Integrity and Procedure: Student Academic Integrity, and to uphold high standards of academic integrity to ensure the quality and value of our qualifications.

The Academic Integrity Rule 2021 is a legal document that the University uses to promote academic integrity, and manage breaches of the academic integrity principle. The Policy and Procedure support the Rule by outlining overarching principles, responsibilities and processes. The Academic Integrity Rule 2021 commences on 1 December 2021 and applies to courses commencing on or after that date, as well as to research conduct occurring on or after that date. Prior to this, the Academic Misconduct Rule 2015 applies.

The University commits to assisting all students to understand how to engage in academic work in ways that are consistent with, and actively support academic integrity. All coursework students must complete the online Academic Integrity Module (Epigeum), and Higher Degree Research (HDR) students are required to complete research integrity training. The Academic Integrity website provides information about services available to assist students with their assignments, examinations and other learning activities, as well as understanding and upholding academic integrity.

## Online Submission

You will be required to electronically sign a declaration as part of the submission of your assignment. Please keep a copy of the assignment for your records. Unless an exemption has been approved by the Associate Dean (Education) submission must be through Turnitin.

## Hardcopy Submission

There is no hardcopy submission in the course.

## Late Submission

No submission of assessment tasks without an extension after the due date will be permitted. If an assessment task is not submitted by the due date, a mark of 0 will be awarded.

## Referencing Requirements

The Academic Skills website has information to assist you with your writing and assessments. The website includes information about Academic Integrity including referencing requirements for different disciplines. There is also information on Plagiarism and different ways to use source material.

## Returning Assignments

The marked assignments will be returned online.

## Extensions and Penalties

Extensions and late submission of assessment pieces are covered by the Student Assessment (Coursework) Policy and Procedure. Extensions may be granted for assessment pieces that are not examinations or take-home examinations. If you need an extension, you must request an extension in writing on or before the due date. If you have documented and appropriate medical evidence that demonstrates you were not able to request an extension on or before the due date, you may be able to request it after the due date.

## Resubmission of Assignments

It will not be possible for assignments to be resubmitted.

## Privacy Notice

The ANU has made a number of third party, online, databases available for students to use. Use of each online database is conditional on student end users first agreeing to the database licensor’s terms of service and/or privacy policy. Students should read these carefully. In some cases student end users will be required to register an account with the database licensor and submit personal information, including their: first name; last name; ANU email address; and other information.
If any student chooses not to agree to the database licensor’s terms of service or privacy policy, the student will not be able to access and use the database. In these circumstances students should contact their lecturer to enquire about alternative arrangements that are available.

Academic Quality Assurance Committee monitors the performance of students, including attrition, further study and employment rates and grade distribution, and College reports on quality assurance processes for assessment activities, including alignment with national and international disciplinary and interdisciplinary standards, as well as qualification type learning outcomes.

Since first semester 1994, ANU uses a grading scale for all courses. This grading scale is used by all academic areas of the University.

## Support for students

The University offers students support through several different services. You may contact the services listed below directly or seek advice from your Course Convener, Student Administrators, or your College and Course representatives (if applicable).

## Convener

 Dr Le Chang 6125 5116 le.chang@anu.edu.au

### Research Interests

Model selection, robust statistics, high-dimensional data analysis, lasso, PCA, spatio-temporal.

### Dr Le Chang

 Monday 15:00 16:00 Monday 15:00 16:00

## Instructor

 Dr Le Chang 6125 5116 le.chang@anu.edu.au

### Dr Le Chang

 Monday 15:00 16:00 Monday 15:00 16:00