In: Operations Management
SHOW STEPS, FORMULAS, AND EXPLANATIONS
a. The following table contains figures on the monthly volume and unit costs for a random sample of the 16 items from a list of 2,000 inventory items at a health care facility. Develop an A-B-C classification for these items.
| 
 Item  | 
 Unit Cost  | 
 Usage  | 
 Item  | 
 Unit Cost  | 
 Usage  | 
| 
 K34  | 
 $10  | 
 200  | 
 F99  | 
 $20  | 
 60  | 
| 
 K35  | 
 25  | 
 600  | 
 D45  | 
 10  | 
 550  | 
| 
 K36  | 
 36  | 
 150  | 
 D48  | 
 12  | 
 90  | 
| 
 M10  | 
 16  | 
 25  | 
 D52  | 
 15  | 
 110  | 
| 
 M20  | 
 20  | 
 80  | 
 D57  | 
 40  | 
 120  | 
| 
 Z45  | 
 80  | 
 200  | 
 N08  | 
 30  | 
 40  | 
| 
 F14  | 
 20  | 
 300  | 
 P05  | 
 16  | 
 500  | 
| 
 F95  | 
 30  | 
 800  | 
 P09  | 
 10  | 
 30  | 
b. Given the monthly usages in the following table, classify the items in A, B, and C categories according to dollar usage.
| 
 Item  | 
 Usage  | 
 Unit Cost  | 
| 
 4021  | 
 90  | 
 $1,400  | 
| 
 9402  | 
 300  | 
 12  | 
| 
 4066  | 
 30  | 
 700  | 
| 
 6500  | 
 150  | 
 20  | 
| 
 9280  | 
 10  | 
 1,020  | 
| 
 4050  | 
 80  | 
 140  | 
| 
 6850  | 
 2,000  | 
 10  | 
| 
 3010  | 
 400  | 
 20  | 
| 
 4400  | 
 5,000  | 
 5  | 
c. Determine the percentage of items in each category and the annual dollar value for each category for part b.
a) ABC analysis
Step 1: Calculate Dollar value of each item by multiplying the Unit cost with Usage.
Step 2: Sort the items in descending order of Dollar value.
Step 3: Compute for each item the % of total dollar value of all items.
Step 4: Calculate running sum of % (Cumulative %)
Step 5: Classifiy the items upto cumulative % of 80 as A category, Next 15-17% as B category and the last 3-5% as C catgory

Formulas:
E2 =C2*D2
F2 =E2/$E$18
G3 =F3+G2
copy down to row 17

b) Repeat the same step-wise method for this part
