The following overhead data are for a department of a large company. Actual Costs Incurred Static Budget Activity level (in units) 360 340 Variable costs: Indirect materials $4,182 $4,148 Electricity $2,536 $2,414 Fixed costs: Administration $6,540 $6,500 Rent $6,310 $6,400 Required: Construct a flexible budget performance report that would be useful in assessing how well costs were controlled in this department.