Appendix C: Cost Estimating Methodologies

NASA Cost Estimating Handbook Version Appendix C Cost Estimating Methodologies C-1 February 2015 Appendix C: Cost Estimating Methodologies The cost estimator must select the most appropriate cost Estimating methodology (or combination of Methodologies ) for the data available to develop a high quality cost estimate. The three basic cost Estimating methods that can be used during a NASA project s life cycle are analogy, parametric, and engineering build-up (also called grassroots ) as well as extrapolation from actuals using Earned Value Management (EVM). This Appendix provides details on the following three basic cost Estimating methods used during a NASA project s life cycle: Analogy Cost Estimating Parametric Cost Estimating Simple linear regression (SLR) Models Simple Nonlinear regression Models multiple regression Models ( linear and Nonlinear) model Selection Process Summary: Parametric Cost Estimating Engineering Build-Up Cost Estimating (also called Grassroots ) Estimating the Cost of the Job Pricing the Estimate (Rates/Pricing) Documenting the Estimate Basis of Estimate (BOE) Summary: Engineering Build-Up Cost Estimating For additional information on cost Estimating Methodologies , refer t

Simple Nonlinear Regression Models C.2.3. Multiple Regression Models (Linear and Nonlinear) C.2.4. Model Selection Process ... Assuming a linear relationship between power and cost, and assuming also that power is a cost driver of ... (examples would be comparisons of pointing accuracy requirements for a guidance

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