To provide the program for assisting the proper ordering of an article having life without shortage and excessive loss.

This program comprises a table B1 for inputting daily numerical quantities of order, sale, loss, variation, and index, a table B2 of daily variation numbers based upon as for sale and loss, a table B3 showing the total sale number in an arbitrary period computed from the day of input, a sale predicted number determined by stock transition, the loss number, variation number, the difference between the sale predicted number and actual sale number, and a stock control number, a table B4 of variation errors, a table B5 of addition numbers by elements based upon a sale base number, a table B6 of addition numbers by the respective elements based upon the loss variation number, and a table B7 of the addition numbers by the elements. Then whether sales tend to rise or fall is analyzed to calculate the standard for sales, thus assisting the ordering.