Which type of demand helps to determine how much raw material is needed to produce a final product?

Independent demand refers to the demand for finished products that are not influenced by the demand for other items. It typically pertains to final products consumed by end-users, such as consumer goods. Since independent demand is not tied to the production of other products, it does not provide the information needed for calculating raw material requirements.

Time-phased demand planning involves scheduling when products are needed, but it does not specifically address how much raw material is required. While it helps in timing the ordering and production processes, it does not directly relate to the calculation of raw materials needed for production.

Gross requirements refer to the total amount of materials needed without accounting for any inventory on hand. While important in the overall planning process, gross requirements do not specifically determine how much raw material is needed for a final product, as they do not consider the dependencies on production schedules.