Data for: 3378064

Kirsch et al. (2002; 2010) highlight the control of IS projects. For them there are complementarities between formal and informal control to evaluate IS projects. In this article, we show clearly that in IS projects the evaluation is a simultaneous mix of formal and informal control. This paper presents a management tool to estimate the project's budgetary and planning deviations and one other management tool to simulate the probabilities of deviation in uncertain environment (extraction and valuation of tasks in MS project). We test our cost based model on a projects' population. We then enrich the theorythrough the hybrid indicators introduction which combine informal and formal control. Our methodology is inductive and we generalize our results from the research and development of Information systems projects in computer industry (ISDP) to the (ISP) information system project (Baskerville et al., 2004)