Influence of the Review of Executed Activities Utilizing Planning Poker

Background -- The software effort estimation research area aims to improve the accuracy of this estimation in software projects and activities. Aims -- This study describes the development and usage of a web application to collect the generated data from the Planning Poker estimation process and the analysis of the collected data to investigate the impact of revising previous estimates when conducting similar new estimates in a Planning Poker context. Method -- Software activities were estimated by UTFPR students, using Planning Poker, with and without revising previous similar activities, storing data regarding the decision-making process. And the collected data was used to investigate the impact that revising similar executed activities have in the software effort estimates´ accuracy. Obtained Results -- The UTFPR students were divided into 14 groups. Eight of them showed accuracy increase in more than half of their estimates. Three of them had almost the same accuracy in more than half of their estimates. And only three of them had accuracy decrease in more than half of their estimates. Conclusion -- Reviewing the similar executed software activities, when using Planning Poker, led to more accurate software estimates in most cases, and, because of that, can improve the software development process.