Abstract
The method of selecting a quality improvement strategy by using the ratio of improvement rate of a product function to its required cost has been generally used by many manufacturers. However, it is necessary to consider that each customer has preferences and expectations attached to the product and any changes to the product that may occur. Therefore, the quality improvement strategies to be selected by the manufacturers do not always agree well with customer satisfaction levels. It is the purpose of this paper to suggest a method of strategy selection for quality improvement by using the ratio of the degree of contribution towards customer satisfaction to the cost required for the improvement.
