i. Why are overhead costs allocated to products and not traced 1 to products as direct materials and direct labor are? What are three common methods of assigning overhead costs to a product? 2. 3. Why are direct labor hours and machine hours commonly 4. What are the advantages of using a single plantwide over- 5. The usefulness of a single plantwide overhead rate is based 6. What is a cost object? used as the bases for overhead allocation? 12 13 14 head rate? on two assumptions. What are those assumptions? 15