A Systematic Literature Review on Common Reasons and Proposed Approaches for Accurate Effort Estimations in Agile Software Development

The common reasons for inaccurate effort estimations in Agile software development are related to the quality of available information, team-related factors, estimation practices, project management, and business influences. Researchers have proposed various approaches to improve effort estimation, primarily focused on predicting the effort, but fewer approaches aim to directly address the common reasons for inaccurate estimations.