XKR1 EX 17-15 Decision making with job order costs Moss Manufacturing Inc. is a job shop. The management of Moss Manufacturing uses the cost information from the job sheets to assess their cost performance. Information on the total cost, product type, and quantity of items produced is as follows: Date Job No. Product Quantity Amount Jan. 2 300 $ 6,600 Jan. 15 26 M-Z4 1,300 11,700 Feb. 3 M-Z4 1,100 14,300 Mar. 7 XKR1 460 7,360 Mar. 24 SL500 1,850 12,950 May 19 SL500 2,200 19,800 June 12 XKR1 4,800 Aug. 18 SL500 2,750 30,250 Sept. 2 M-Z4 900 9,000 Nov. 14 XKR1 540 4,320 Dec. 12 SL500 2,350 32,900 a. Develop a graph for each product (three graphs), with Job Number (in date order) on the horizontal axis and Unit Cost on the vertical axis. Use this information to determine Moss Manufacturing's cost performance over time for the three products. What additional information would you require to investigate Moss Manufac- turing's cost performance more precisely? 400 102 b