COMPONENT SAFETY INVENTORY AMOUNT CALCULATING METHOD, PROGRAM FOR EXECUTING SAME, AND DEVICE FOR EXECUTING SAME

摘要

A device (100) for calculating the amount of safety inventory of a common component commonly used in products comprises a required-amount deviation calculating section (111) for determining the required-amount standard deviation of the common component using the demand standard deviation of each product, an integrated required-amount deviation calculating section (112) for determining the required-amount standard deviation of the common component of all the products as an integrated required-amount standard deviation using the required-amount standard deviation of the common component of each product, and a safety inventory amount calculating section (116) for determining the safety inventory amount of the common component using the integrated required-amount standard deviation. The integrated required-amount deviation calculating section (112) has a correlation coefficient calculating block (113) for determining a correlation coefficient representing the correlation among the required amounts of the common component of the products from the past records of the required amount of the common component of each product and a primary integrated required-amount standard deviation block (114) for determining an integrated required-amount standard deviation using the correlation coefficient and the required-amount standard deviation of the common component of each product.