Which Six Sigma role is responsible for leading project teams?

The role responsible for leading project teams in Six Sigma is the Black Belt. Black Belts have a deep understanding of Six Sigma methodologies, statistical tools, and project management skills. They are equipped to manage complex projects from start to finish, guiding teams through data analysis and implementing process improvements. Black Belts typically dedicate a significant portion of their time to Six Sigma projects and are often seen as the primary point of contact for project teams. Their leadership is crucial in setting project goals, ensuring team collaboration, and driving toward successful completion of process improvement initiatives.

While Green Belts and Master Black Belts also play significant roles within Six Sigma teams, their focus tends to differ. Green Belts generally operate under the guidance of Black Belts while managing smaller projects or specific tasks within larger initiatives. Master Black Belts, on the other hand, are more focused on mentoring and training other practitioners rather than directly leading project teams. Yellow Belts provide support and contribute to projects but do not typically have the leadership authority over them. Therefore, the Black Belt's primary role as a leader in project teams is what makes this option the correct answer.