USING ORTHOGONAL ARRAY IN DESIGNING EFFECTIVE QUESTIONNAIRE FOR IMPROVING INVENTORY ACCURACY AT ELECTRICITY WAREHOUSE
The process of classical data collection through a survey is time-consuming, expensive, and may not be feasible. In practice, it is always good to make sure that the survey design works with the diversity of factors and levels that affect the products or services. Since the data quality gathered depends solely on the quality of the survey constructed and the written questions, this paper presents one of the most effective tools in designing a stated-choice survey using orthogonal array design to gather the information that improves the inventory accuracy in electricity company’s warehouses. The stated-choice survey provides an effective way to explore survey respondents’ preferences and evaluate the interchanges that survey respondents make in considering several product and service combinations. This method will help inventory engineers and workers for data collection with more information and a minimum number of questions and efforts.
Orthogonal array; stated-choice survey; Discrete choice experiments and analysis; inventory control; inventory accuracy.