Mohd Azri Pawan  Teh, Nazrina  Aziz, Zakiyah  Zain, 
    An Approach in Finding Number of Optimal Groups for Group Chain Acceptance
Sampling Plans (GChSP) by using Minimum Angle Method,
    Journal of Engineering and Applied Sciences,
    Volume 14,Issue 12,
    2019,
    Pages 4067-4073,
    ISSN 1816-949x,
    jeasci.2019.4067.4073,
    (https://makhillpublications.co/view-article.php?doi=jeasci.2019.4067.4073)
    Abstract: There are several methods used such as minimizing the consumer’s risk and minimum angle method(minimizing consumer’s and producer’s risks simultaneously) when developing a new acceptance sampling plan. For the minimizing consumer’s risk method, researchers have conducted a thorough research and all the
findings using this method are well-discussed. However, for the minimum angle method, there is a slight issue
when researchers discuss their findings which is they do not present the ultimate finding using the proposed
method. That is the number of groups reported in the findings does not reflect the number of optimal groups
associated with the smallest angle. Therefore, this study proposes an approach for finding number of optimal
for Group Chain acceptance Sampling Plan (GChSP) by using minimum angle method. By using this approach,
the number optimal of groups is obtained when the angle has the smallest value. The smallest angle is crucial,
since, it discriminates a good lot and a bad lot better. Apart from that, it resembles the ideal Operating
Characteristic (OC) curve.
    Keywords: producer’s risk;consumer’s risk;Group chain acceptance sampling plan;number of optimal groups;minimum angle method;slight issue