People Procedures Computer not updated No training Wrong fee Too much Too much water coffee Too many grounds Wrong size filter rude No training Bad sugar Bad cream Brew time too long Outdated Lids don't hibinty baske cup Dirty cups Bad coffee Coffee not hot enough Warmer not working Packets wet Material Equipment Based on the above diagram, which of the following statements is NOT true? In Six Sigma methodology, this diagram is used for analyzing causes of defect. The potential root cause of "coffee not hot enough" is "warmer not working". Causes of bad coffee can be grouped into four categories: people, procedures, material, and equipment. "Outdated" is a potential root cause of "Too many grounds". Potential root causes of bad coffee are dirty cups, computer not updated, and wrong size filter