IMPROVED SHEWHART-TYPE X ̅ CONTROL SCHEMES UNDER NON-NORMALITY ASSUMPTION: A MARKOV CHAIN APPROACH
Journal Title: International Journal for Quality Research - Year 2018, Vol 12, Issue 1
Abstract
In statistical process control and monitoring (SPCM), traditional (or classical) X ̅ control schemes are designed under the assumption of normally distributed data. However, in real-life applications, the normality assumption could easily fail to hold, and the results would no longer be realistic. Therefore, X ̅ control schemes designed under flexible probability distributions are needed. In this paper, we consider to improve the Shewhart-type X ̅ control scheme using supplementary 2-of-(h+1) and 1-of-1 or 2-of-(h+1) runs-rules (where h≥ 1) for non-normal data. The proposed control schemes are designed using the Burr type XII probability distribution function (pdf) because of its properties and suitability for general industrial applications. The performance of the proposed control schemes is investigated using the Markov chain approach. It was found that the proposed schemes outperform the existing standard and improved X ̅ control schemes in many cases. An illustrative real-life example is used to demonstrate the implementation of the proposed schemes.
Authors and Affiliations
Jean-Claude Malela-Majika, Busanga Jerome Kanyam, Maria Rapoo
Keywords
Related Articles
- EP ID EP266418
- DOI 10.18421/IJQR12.01-02
- Views 80
- Downloads 0
ASSESSING CUSTOMER SATISFACTION BASED ON QoS PARAMETERS
Measurement of customer satisfaction is an efficient tool to detect problems in SP (Services Provider) and their relationship with customers. Based on this measurement a relationship between customer satisfaction and loy...
CUSTOMER ORIENTATION OF EMPLOYEES IN TRAVEL AGENCIES AS A PREDISPOSITION OF SERVICE QUALITY: TEST OF COSE CONSEQUENCES MODEL
The principal aim is to test the Customer Oriented Service Employee (COSE) model and customer sided consequences in travel agencies in Serbia. Data was collected from 243 customers of travel agencies willing to evaluate...
THE PROCESS OF THE FORMATION OF THE QUALITY OF ORGANISATION'S FUNCTIONING AND DEVELOPMENT
Demanding surrounding makes it necessary for an organisation to adapt and restructure constantly. Therefore, it is essential for an organisation to acquire competence allowing to use opportunities and avoid dangers which...
MEASUREMENT OF ORGANIZATIONAL CULTURE IN PUBLIC ADMINISTRATION: CASE STUDY OF 5 MUNICIPALITIES IN BOSNIA AND HERZEGOVINA
: Public administration is classified into a specific organizational form that follows the development of all civilizations. Today, more than ever, we deal with creating a new model of public administration. The reform o...
CLINICAL DECISION MAKING IN NURSING CARE: EVIDENCE BASED PRACTICE AND SENIORITY
In the nursing profession, EBP makes a positive contribution to healthcare outcomes, care delivery, clinical teaching and research. The research objective was to determine the nurses' knowledge, attitude, practice toward...