Accession Number:

ADA439077

Title:

Software Cost Estimation and Sizing Methods: Issues and Guidelines

Descriptive Note:

Monograph

Corporate Author:

RAND CORP SANTA MONICA CA

Report Date:

2005-01-01

Pagination or Media Count:

118.0

Abstract:

Estimating the size and cost of software is a risky business. When software is a crucial component in numerous space weapon aircraft, and information technology projects critical to operations as it often is for the Air Force, accurate estimates of software costs are essential. Because software size is usually the most influential factor in determining software costs, good estimates of size are critical to good cost estimation. Rather than seeking the perfect method for estimating size and cost exactly a more realistic approach to improving estimation is to reduce the risks that is, to anticipate likely problems associated with improper sizing and costing of software. Consequently the goal of this report is to aid experienced cost analysts in understanding the sources of uncertainty and risk in sizing and costing software, and to provide insight into mitigating the risks when making choices about different sizing and costing opt ions. We pay particular attention to the early stages of a project when many of the factors needed to support estimation such as the particulars of each system requirement may be unknown or uncertain.

Subject Categories:

  • Economics and Cost Analysis
  • Theoretical Mathematics
  • Computer Programming and Software

Distribution Statement:

APPROVED FOR PUBLIC RELEASE