The document defines and provides examples of different types of costs that are relevant to business and economic analysis including: - Fixed costs that do not vary with activity level (e.g. taxes, insurance) - Variable costs that vary with activity level (e.g. labor, energy) - Incremental costs that result from increasing output - Direct costs that can be directly allocated to outputs (e.g. materials for a chair) - Indirect costs that are difficult to allocate to specific outputs (e.g. general supplies) - Standard costs that are planned in advance of production - Cash costs that involve cash payments versus book costs that represent recovery of past expenditures - Sunk costs that