EOQ hay còn gọi là trật tự kinh tế số lượng: là một trong những kỹ thuật kiểm soát hàng tồn kho làm tối thiểu tổng số đang nắm giữ và sắp đặt các chi phí cho năm lượng trật tự kinh tế là kỹ thuật mà quyết định vấn đề của người quản lý vật liệu. | There are 10 orders per year (annual demand divided by the size of the order quantity). This is also the number of leadtimes each year, so 10 leadtimes times a 10% probability of shortage on 1 leadtime equals 1 expected shortage per year in cell D24. Average inventory investment in D25 includes two components: half the order quantity plus all of the safety stock. The reasoning for counting half the order quantity in average investment is explained in section . Why do we count all of the safety stock? Sometimes demand will be less than expected and we will have safety stock left over following a leadtime. Sometimes demand will be greater than expected and we will use up all safety stock. So we count all of the safety stock in average inventory investment. The maximum inventory investment that should be on hand at one time occurs just after an order is received. The maximum is the sum of order quantity plus safety stock. Finally, cell D27 indicates that about of annual sales units will be on backorder at any given time.
