Software is playing an ever-increasing role in critical business processes as computer applications become more diverse and permeate more areas of organisations. As information becomes increasingly important factor to businesses, producing reliable information systems become more and more crucial. This research investigates the application of statistical testing to business software reliability and develops an explanatory model of the reliability of business application systems. In particular, the research investigates the effect on software reliability of (a) volatility of user requirements, (b) user involvement in the software development, (c) user IS experience, (d) user understanding of requirements, (e) user perception of the system, and (f) developer expertise.
Results showed that as user requirements become more volatile, the reliability of software decreases. Unfortunately, the analyses failed to find statistically significant results to support other research hypotheses due to the small number of observations.