Final answer:
Group and composite depreciation do not necessarily use the straight-line depreciation method, even though it is common. Companies may choose other methods based on asset usage patterns or financial strategies.
Step-by-step explanation:
The question addresses whether group depreciation and composite depreciation both utilize the straight-line depreciation method. Group depreciation is a method where assets that are similar in nature and have approximately the same useful lives are grouped together and depreciated as a single asset. <>Composite depreciation is a similar concept where assets are grouped together, but they may have different lives and are depreciated as a single portfolio. Although both methods deal with collective assets, they do not necessarily have to use the straight-line method. Depreciation methods can vary based on company policy or the nature of the asset group, but the straight-line method is often preferred due to its simplicity.
Therefore, the answer to the question is False. It's not a requirement for these methods to strictly use the straight-line method, even though it is common practice to do so. Companies might choose other depreciation methods that better match the usage patterns of the assets or other financial consideration.