Abstract
Of late, the importance of software, which is the core of the ICT systems supporting social infrastructure, has grown. The capability to deliver high-quality software defines the competitive power of an enterprise. ICT project managers must improve software quality within limited time and cost. Project managers are required to rationally judge whether enough effort and duration have been reserved to develop high-quality software. To support project managers, the author has built an effort prediction model and a duration prediction model based on regression analyses, using ICT projects' software development data accumulated in-house. Since the two prediction models are simple models without parameters about effective factors, they have certain accuracy. For project managers, the effort prediction model and the duration prediction model are presented as regression curves with prediction intervals in the scatter charts of the project data used for the analyses. The models enable project managers to validate their effort plans and duration plans.
