Available Online at www.ijcsmc.com International Journal of Computer Science and Mobile Computing A Monthly Journal of Computer Science and Information Technology ISSN 2320–088X IJCSMC, Vol. 2, Issue. 8, August 2013, pg.150 – 156 RESEARCH ARTICLE © 2013, IJCSMC All Rights Reserved 150 Study of Uncertainty Factors Influenced in Software Phases Effecting in Cost Estimation G. Rajkumar 1 , Dr. K. Alagarsamy 2 1 Assistant Professor, N.M.S.S.Vellaichamy Nadar College, Madurai, India 2 Associate Professor, Computer Centre, Madurai Kamaraj University, Madurai, India Abstract— The IT industry has certain challenges for quality management. In order to meet business and organisational objectives and deliver quality software, it is essential to improve the organisational practices, and processes that produce the software. Software process improvement is both possible and essential. A key to successful software process improvement is making a step-by-step improvement effort, which gradually evolves, into a paradigm shift in the way the organisation does business. The processes and practices complement each other for improvement and both require human effort from everyone in the organisation. Software project risk management is crucial for the software development projects. It is used for project planning and control purposes during the project execution. To success in managing a software project, project manager needs to understand the nature of software risks. The estimation of the software cost remains one of the most challenging problems in software engineering; as a preliminary estimate of cost includes many elements of uncertainty. All projects have some uncertainties. Each project will have a different capacity for uncertainty. This paper discusses the issues involved in project uncertainty, and presents the feedback of Team leaders and team members. I. INTRODUCTION The Industry has gone through at least four generations of programming languages and three major development paradigms. As [2] software process improvement is people-oriented, it is essential to manage the organisation under a productive and encouraging environment to achieve the process improvement objectives. The productive environment may be nurtured with the help of certain organisational measures. There are certain external factors and internal issues that may create an impact on the effectiveness of these measures. Software organisations should identify their process strengths and weaknesses, improvement areas, potential risks and opportunities. Project managers can use different techniques and tools that are useful to manage projects efficiently. The use of these [4 ] techniques and tools could lead to better chance of easily identify the uncertainty factors. In this paper discuss about major causes of uncertainty and a questionnaire was designed to investigate the uncertainty factors that affect to the project success. II. METHODOLOGY The objective of this study is to investigate the causes of uncertainty of the projects undertaken by the team leaders and team members. A questionnaire was designed to investigate the factors that affecting the project success. [3] The questionnaire consists of two parts. Part one gathers information about the project title, company name, designation, etc., Second part contains project uncertainty assessment criteria. There are nine questions on major uncertainty factors in software development project, which are rated based on a rating of 1 to 5. In this questionnaire, information is gathered about the Team leaders and team members in the same project. Eight different project and different locations the Team leaders and team members are rating the questionnaire.