Answer: Pareto charts
Explanation: Pareto chart is a tool common to all quality efforts which includes six sigma also. A pareto chart contains both bars and lines. In such a graph the individual values are presented in form of bar and the final value depicting the cumulative total is represented by the lines.
Six sigma is a tool used by management to identify and remove the defects from a process thus making it more effective.
Hence, from the above we can conclude that right answer to this problem is Pareto charts.
