ST221 Linear Statistical Modelling

Please note that all lectures for Statistics modules taught in the 2022-23 academic year will be delivered on campus, and that the information below relates only to the hybrid teaching methods utilised in 2021-22 as a response to Coronavirus. We will update the Additional Information (linked on the right side of this page) prior to the start of the 2022/23 academic year.

Throughout the 2021-22 academic year, we will be adapting the way we teach and assess your modules in line with government guidance on social distancing and other protective measures in response to Coronavirus. Teaching will vary between online and on-campus delivery through the year, and you should read the additional information linked on the right hand side of this page for details of how this will work for this module. The contact hours shown in the module information below are superseded by the additional information. You can find out more about the University’s overall response to Coronavirus at: https://warwick.ac.uk/coronavirus.

All dates for assessments for Statistics modules, including coursework and examinations, can be found in the Statistics Assessment Handbook at http://go.warwick.ac.uk/STassessmenthandbook

ST221-12 Linear Statistical Modelling

Academic year: 21/22
Department: Statistics
Level: Undergraduate Level 2
Module leader: Elke Thonnes
Credit value: 12
Module duration: 10 weeks
Assessment: Multiple
Study location: University of Warwick main campus, Coventry

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Introductory description

This module runs partly in term 2 and partly in term 3. It is available for students on a course where it is a listed option and as an Unusual Option to students who have completed the prerequisite modules. It is strongly recommended for any students intending to do substantial data analysis.

Students wishing to pursue the integrated Masters MMORSE are expected to take ST221 in Year 2. Data Science students will find it highly relevant for their third year project. ST221 may form part of the criteria for determining places on ST modules with capped numbers such as ST340 Programming for Data Science and ST344 Professional Practice of Data Analysis.

Pre-requisites for Statistics students: ST115 Introduction to Probability, ST218 Mathematical Statistics A and ST219 Mathematical Statistics B (taken concurrently).
Pre-requisites for Non-Statistics students: ST111/ST112 Probability A & B and ST220 Introduction to Mathematical Statistics. Basic knowledge in R such as covered in ST104 Statistical Laboratory I will be useful.

Results from the coursework from this module may be partly used to determine exemption eligibility in the computer based assessment components of the Institute and Faculty of Actuaries modules CS1, CS2, CM1 and CM2. (Independent application to the IFoA may be required.)

Module web page

Module aims

To introduce the ideas and methods of statistical modelling and statistical model exploration. To introduce students to the application of R software and its use as a tool for statistical modelling, specifically for working with linear models in a variety of different scenarios.

Outline syllabus

This is an indicative module outline only to give an indication of the sort of topics that may be covered. Actual sessions held may differ.

Introduction to the R software. Some useful methods of examining large data sets. The use of this package to obtain important summary features in different data structures.
A review of the simple linear regression. Distributions of estimators and residuals.
An introduction to multiple regression. Estimators of these models. How the study of residuals can inform and refine model choice. How to use R to check the plausibility of such a statistical model and how to use diagnostic plots in combination with the theory of model refinement.
Introduction of polynomial regression and various ANOVA models. The coding and interpretation of these models using R.
An introduction to linear models for time series and generalized linear models for frequency data.

Learning outcomes

By the end of the module, students should be able to:

Make use of the language R to explore data sets with appropriate graphs and summary statistics.
Make use of R to fit appropriate linear models to data sets.
Understand how various linear models can be proposed, estimated, diagnostically checked, compared and criticised.

Indicative reading list

View reading list on Talis Aspire

Subject specific skills

TBC

Transferable skills

TBC

Study time

Type	Required	Optional
Lectures	30 sessions of 1 hour (25%)	2 sessions of 1 hour
Practical classes	4 sessions of 1 hour (3%)
Private study	50 hours (42%)
Assessment	36 hours (30%)
Total	120 hours

Private study description

Weekly revision of lecture notes and materials, wider reading and practice exercises, working on problem sets and preparing for examination.

Costs

No further costs have been identified for this module.

You do not need to pass all assessment components to pass the module.

Students can register for this module without taking any assessment.

Assessment group D3

	Weighting	Study time	Eligible for self-certification
Assignment 1	15%	18 hours	Yes (extension)
Due in week 7 of term 2. You will use the R program to carry out calculations and fit models on provided data sets in response to a set of questions. You will present, discuss and evaluate the results. The number of words noted below refers to the amount of time in hours that a well-prepared student who has attended lectures and carried out an appropriate amount of independent study on the material could expect to spend on this assignment. 500 words is equivalent to one page of text, diagrams, formula or equations; your ST221 Assignment 1 should not exceed 18 pages in length.
Assignment 2	15%	18 hours	Yes (extension)
Due in week 1 of term 3. You will use the R program to carry out calculations and fit models on provided data sets in response to a set of questions. You will present, discuss and evaluate the results. The number of words noted below refers to the amount of time in hours that a well-prepared student who has attended lectures and carried out an appropriate amount of independent study on the material could expect to spend on this assignment. 500 words is equivalent to one page of text, diagrams, formula or equations; your ST221 Assignment 2 should not exceed 18 pages in length.
On-campus Examination	70%		No
The examination paper will contain four questions, of which the best marks of THREE questions will be used to calculate your grade. ~Platforms - Moodle Answerbook Green (8 page) Students may use a calculator Cambridge Statistical Tables (blue)

Assessment group R1

	Weighting	Study time	Eligible for self-certification
In-person Examination - Resit	100%		No
The examination paper will contain four questions, of which the best marks of THREE questions will be used to calculate your grade. ~Platforms - Moodle Answerbook Green (8 page) Students may use a calculator Cambridge Statistical Tables (blue)

Feedback on assessment

Reports will be marked and feedback returned to students within 20 working days.

Solutions and cohort level feedback will be provided for the examination.

Past exam papers for ST221

Courses

This module is Core for:

Year 2 of USTA-G1G3 Undergraduate Mathematics and Statistics (BSc MMathStat)
Year 2 of USTA-GG14 Undergraduate Mathematics and Statistics (BSc)

This module is Optional for:

Year 2 of USTA-G302 Undergraduate Data Science
Year 2 of USTA-G304 Undergraduate Data Science (MSci)

This module is Option list A for:

Year 2 of USTA-G300 Undergraduate Master of Mathematics,Operational Research,Statistics and Economics
Year 2 of USTA-Y602 Undergraduate Mathematics,Operational Research,Statistics and Economics

This module is Option list B for:

Year 2 of UCSA-G4G1 Undergraduate Discrete Mathematics
Year 2 of UCSA-G4G3 Undergraduate Discrete Mathematics

Catalogue

Additional Information

Resources

Feedback and Evaluation

Grade Distribution

Timetable