A quality improvement team in one Department of Medicine division is evaluating whether there is variation in the time it takes to diagnose fractures in patients once they receive X-rays in Radiology. The QI team collected data for the first 19 patients, which is displayed as a control chart in the figure below. After reviewing the control chart, which of the following conclusions can the QI team make? This chart identifies the root cause of why it took a long time to diagnose fractures in the patients Patient #11 is exhibiting common cause variation Patients # 1, 4, and 16 are exhibiting special cause variation Patient # 3 is exhibiting special cause variation .