What is the five whys technique used for?

The five whys technique is primarily a problem-solving method that delves into cause-and-effect relationships. This technique is utilized to identify the root cause of a problem by asking "why" repeatedly, typically five times. Each answer serves as the basis for the subsequent question, allowing the team to peel back the layers of symptoms and surface issues, ultimately defining the underlying cause that needs to be addressed.

This method is particularly effective in a Six Sigma context as it encourages teams to move beyond addressing superficial symptoms and fosters a deeper analysis of process issues. By finding the root cause, teams can implement more effective solutions that prevent recurrence and improve overall process quality.

Other options, such as collecting data or evaluating team performance, do not capture the essence of the five whys technique, which is centered around understanding and resolving problems at their core. The method also does not focus on customer engagement, making it distinct in its application and purpose within process improvement methodologies.