A Method to Determine the Final Importance of Customer Attributes Considering Statistical Significance

Kim, Kyung-Mee O.

Journal of Korean Society for Quality Management > Volume 36(3); 2008 > Article

Journal of Korean Society for Quality Management 2008;36(3): 1-.

통계적 유의성을 고려하여 고객 요구속성의 중요도를 산정하는 방법

김경미

건국대학교 산업공학과

A Method to Determine the Final Importance of Customer Attributes Considering Statistical Significance

Kyung-Mee O. Kim

Department of Industrial Engineering, Konkuk University

ABSTRACT

Obtaining the accurate final importance of each customer attribute (CA) is very important in the house of quality(HOQ), because it is deployed to the quality of the final product or service through the quality function deployment(QFD). The final importance is often calculated by the multiplication of the relative importance rate and the competitive priority rate. Traditionally, the sample mean is used for estimating two rates but the dispersion is ignored. This paper proposes a new approach that incorporates statistical significance to consider the dispersion of rates in determining the final importance of CA. The approach is illustrated with a design of car door for each case of crisp and fuzzy numbers.

Key Words: House of Quality;Entropy;Fuzzy number;