Abu  Bakar Hasan, Norizarina  Ishak, Sharma  Rao A/l Balakrishnan, 
    Performance Outcomes in Learning Additional Mathematics by
Grey Theory Approach,
    Journal of Engineering and Applied Sciences,
    Volume 14,Issue 6,
    2019,
    Pages 1875-1878,
    ISSN 1816-949x,
    jeasci.2019.1875.1878,
    (https://makhillpublications.co/view-article.php?doi=jeasci.2019.1875.1878)
    Abstract: Grey system theory has evolved, since, it was first introduced roughly 40 years ago. It has been used
in many applications and environments by different researchers worldwide. The aim of this study is to
demonstrate the said theory in education environment by looking at the performance outcome in learning a
mathematical subject at secondary school level through analysis and forecasting. The results show that the
GM (1, 1) Model produced 3.8% mean relative percentage error and future research will focus on how to
optimize the forecasting.
    Keywords: Grey relational analysis;grey modelling;examination forecasting;GM (1;1) Model;environment;applications