In budgeted income statement, Operating variance direct labor, direct material, variable factory overhead, fixed factory overhead-spending, fixed factory overhead-volume were not given according to monthly. If there are revenue variance, selling price variance, mix and volume variance, mix variance, volume variance, other revenue analysis, market share variance, industry volume variance, expense variance in the analysis statement given then it would be useful data for analyzing the firm's January performance because these data can inform us the difference between the revenue and expenses.