Abstract: A budget-management-data creating method by a computer includes: accepting designation of a brand for which budget management data is to be created and a total budget amount; creating budget amounts for respective partial periods in a predetermined period, by automatically allocating the total budget amount to the respective partial periods, based on past sales performance data of the designated brand; displaying the created budget amounts to enable acceptance of a correction instruction; proportionally distributing upon accepting a correction of one of the budget amounts, a budget amount reflecting the correction and corresponding to the respective partial periods, the budget amount being proportionally distributed according to a sales ratio of respective item categories corresponding to the brand, the sales ratio corresponding to a corresponding past partial period; and displaying as a budget amount for each of the respective item categories for the respective partial periods, a result of the proportionally

Abstract: A selling status display method including specifying, by a computer when a first graph representing a selling status at each store or a variation in sales among stores is generated and displayed with regard to a designated item, an item category to which the designated item belongs generating, by the computer, a second graph representing a selling status at each store or a variation in sales among stores with regard to the specified item category; and simultaneously displaying, by the computer, the second graph and the first graph.

Abstract: A sales forecast display method includes receiving, by a computer, selection of whether to display a simulation result of a sales forecast based on a first trend related to sales calculated based on sales records or a simulation result of a sales forecast based on a second trend related to sales calculated based on the sales records; and displaying, by the computer, not only information indicating the first trend used for calculation of the simulation result of the sales forecast based on the first trend but also information indicating the second trend, when selection of displaying the simulation result of the sales forecast based on the first trend is received.

Abstract: A budget-management-data creating method by a computer includes: accepting designation of a brand for which budget management data is to be created and a total budget amount; creating budget amounts for respective partial periods in a predetermined period, by automatically allocating the total budget amount to the respective partial periods, based on past sales performance data of the designated brand; displaying the created budget amounts to enable acceptance of a correction instruction; proportionally distributing upon accepting a correction of one of the budget amounts, a budget amount reflecting the correction and corresponding to the respective partial periods, the budget amount being proportionally distributed according to a sales ratio of respective item categories corresponding to the brand, the sales ratio corresponding to a corresponding past partial period; and displaying as a budget amount for each of the respective item categories for the respective partial periods, a result of the proportionally