B.Sc. [Hons] (Jaffna), M.Sc (NUS), Ph.D(Monash).

  • Ph.D in Statistics (Monash University, Australia, 2008).
  • M.Sc in Statistics (National University of Singapore, Singapore, 2002).
  • B.Sc (Hons) in Statistics (University of Jaffna, Sri Lanka, 1998).
  • Head, Department of Mathematics and Statistics, November 2019 – November 2022.
  • Student Counsellor (2003, 2018), Faculty of Science.
  • Academic Advisor (2009 – 2011), Faculty of Science.
  • Prof. A.Thurirajah Gold Medal for best all-round performance in the Faculty of Science, University of Jaffna, 1998.
  • Prof. P. Kanagasabapathy Memorial prize for the best performance in the special degree examination in Statistics, University of Jaffna, 1998.
  • University of Jaffna Chess Colours, 1997.
  • University of Jaffna Chess Champion of the year, 1997.
  • Monash Graduate Scholarship (MGS) and Monash International Postgraduate   Research Scholarship (MIPRS) from Monash University, Australia, 2004-2008.
  • Research scholarship from National University of Singapore, Singapore, 1999-2001.
  • President (2011, 2015), Jaffna University Science Teachers’ Association (JUSTA), University of Jaffna.
  • Vice President (2015, 2016), Federation of University Teachers’ Associations (FUTA), SriLanka.
  • Senior Treasurer (2017,2018), Science Students’ Union (SSU), University of Jaffna.
  • Senate Representative (2013, 2017-2019), for the Faculty of Science, University of Jaffna.
  • Representative for the Senate to the Campus Board, Vavuniya Campus (2017 – 2019). 
  • Consultant, Employability survey of the undergraduates, University of Jaffna.
  • Resource Person for;
    • Master of Science in Environment Management, Faculty of Graduate Studies, University of Jaffna (2012).
    • Research Methodology,   Faculty of Graduate studies, University of Jaffna, (2010, 2018).
    • Induction Programme for the Probationary Lecturers, Staff Development Centre of the University of Jaffna, 2011, 2012.
    • ‘Statistics for Social Science’, Seminar series organised by Jaffna Science Association(Section D), Jaffna, 2011.

    • ‘Statistics and Data Analysis’, Seminar series organized by Staff Development Centre of the University of Jaffna, 2021.
    • “Research skills training for student researchers”, virtual workshop organized by the Jaffna Science Association (Section A), 2021.

Undergraduate Teaching

  • STA301MC3 – Advanced Design of Experiments.
  • STA304MC3- Computational Statistics.
  • STA425ME3 – Advanced Statistical Theory.
  • STA404XS2 – Advanced Statistical Computing.
  • STA101G3 – Probability Theory.
  • STA105GC3 – Basic Statistical Inference.
  • STA303GC3 – Regression Analysis.

Inter-faculty Teaching

  • Probability and Statistics, Faculty of Engineering, University of Jaffna (2015, 2016, 2022).
  • Business Statistics, Faculty of Business Studies, Vavuniya Campus, University of Jaffna (2011).
  • Introduction to Statistics, Department of Law, University of Jaffna (2017, 2018).
  • Statistics for Computing, Department of Computer Science, University of Jaffna, (2017- to date).
  • Business Statistics, Department of Commerce, University of Jaffna (2022)



  • R. Tharshan and  S. Arivalzahan (2018) A Markov model for investigating the stock market volume behaviour, Journal of Science, Faculty of Science, Eastern University of Sri Lanka. DOI: http://www.digital.lib.esn.ac.lk/handle/123456789/3851


  • D. S. Poskitt and S. Arivalzahan (2011), Description Length and Dimensionality Reduction in Functional Data Analysis, Computational Statistics and Data Analysis. DOI: 10.1016/j.csda.2011.03.018.
  • S.Arivalzahan and S. Muraleetharan (2011), Ranking candidates at G.C.E. A/L examinations. Proceedings of the 67th Annual Sessions of the Sri Lanka Association for the Advancement of Science. 67(1):pp.146.


  • D. S. Poskitt and S. Arivalzahan (2010), Dual P-Values, Evidential Tension and Balanced Tests. ISSN 1440-771X. Working Paper, Department of Econometrics and Business Statistics, Monash University, Australia. http://www.buseco.monash.edu.au/ebs/pubs/wpapers/2010/15-10.php