Cartas de controle por atributos (P E U) na fase i: uma abordagem com dashboard em power bi

Abstract

This study addresses the application of Statistical Process Control (SPC) in quality management, focusing on the use of attribute control charts (P and U) in Phase I through an automated tool. For this purpose, an interactive dashboard was developed in Microsoft Power BI, capable of automating the calculation of control limits, identifying special causes of variation, and performing process stability and capability analysis. The tool was validated in three different scenarios: fictional data, a literature case study, and a real case, covering industrial and service contexts. The results showed that the dashboard accurately identified outof-control points, enabling the removal of special causes and recalculation of limits until statistical stability was achieved, in addition to quantifying performance through indicators such as PPM, Zbench, and DPU. The study highlights that integrating SPC with Business.Intelligence (BI) tools democratizes statistical analysis, making it more accessible and agile. By transforming complex data into clear visual information, the dashboard establishes itself as a practical, replicable, and highly impactful resource for quality management and the continuous improvement of processes.