Study-Unit Description

Study-Unit Description


CODE SOR2120

 
TITLE Convergence and Limits in Probability

 
UM LEVEL 02 - Years 2, 3 in Modular Undergraduate Course

 
MQF LEVEL 5

 
ECTS CREDITS 4

 
DEPARTMENT Statistics and Operations Research

 
DESCRIPTION - Modes of Convergence;
- Borel-Cantelli Lemmas;
- Weak Law of Large Numbers;
- Strong Law of Large Numbers;
- De Moivre-Laplace Theorem;
- Central Limit Theorem - The Lindeberg, Feller, Lyapunov Conditions;
- Weak Convergence of Measures.

Study-Unit Aims:

- Familiarize with the Borel-Cantelli lemma and how it can be used in a variety of different contexts;
- Familiarize with the modes of convergence: almost sure convergence, convergence in probability, convergence in distribution;
- Use the Borel-Cantelli lemma to prove some of the modes of convergence;
- Link the modes of convergence: how almost sure convergence implies convergence in probability which in turn implies convergence in distribution;
- Familiarize with the weak and strong laws of large numbers;
- Be able to use the Lindeberg-Feller condition as well as the Lyapunov condition to prove the central limit theorem.

Learning Outcomes:

1. Knowledge & Understanding:

By the end of the study-unit the student will be able to:

- Understand the difference between the different modes of convergence and the link between them;
- Familiarize with the Borel-Cantelli lemma and its use to prove some of the modes of convergence;
- Familiarize with weak and strong laws of large numbers;
- Use the Lindeberg-Feller and the Lyapunov condition to prove the central limit theorem.

2. Skills:

By the end of the study-unit the student will be able to:

- Prove mathematically the modes of converge of sequences of random variables;
- Use the Borel-Cantelli Lemma to prove some of the modes of convergence;
- Prove mathematically that the sample average of a sequence of random variables converges to the true population average (strong and weak law of large numbers).
- Use the Lindeberg-Feller and the Lyapunov condition to prove the central limit theorem.

Main Text/s and any supplementary readings:

Suggested Texts:

- Rohatgi V.K. ( 1975 ) An Introduction to Probability Theory and Mathematical Statistics, Wiley Series
- Chung, K. L., ( 1979 ) Elementary Probability Theory with Stochastic Processes, Springer
- Ross S., ( 1997 ) Introduction to Probability Models, Academic
- Feller, W. ( 1971 ) An Introduction to Probability Theory and its Applications, John Wiley & Sons
- Grimmett, G.R. and Stirzaker, ( 1994 ) D.R. Probability and Random Processes, Clarendon Press, Oxford.
- Billingsley P. ( 1995 ) Probability and Measure, John Wiley & Sons
- Bauer, Heinz ( 1981 ) Probability Theory and Elements of Measure Theory, Academic Press
- McCabe B. and Tremayne A. ( 1991 ) Elements of Asymptotic Theory with Statistical Application, Manchester University Press

 
ADDITIONAL NOTES Pre-requisite Study-unit: SOR1110

 
STUDY-UNIT TYPE Lecture

 
METHOD OF ASSESSMENT
Assessment Component/s Assessment Due Sept. Asst Session Weighting
Computer-Assisted Examination (2 Hours) SEM2 Yes 100%

 
LECTURER/S Mark A. Caruana

 

 
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It should be noted that all the information in the description above applies to study-units available during the academic year 2025/6. It may be subject to change in subsequent years.

https://www.um.edu.mt/course/studyunit