An SPC chart of a process under study has several recent plot points outside of the upper control limit. The team has taken actions to move the process in the opposite direction, so the out-of-control condition is an unfavorable shift. The Six Sigma team wants to calculate the Cpk in order to assess process capability. What should the team do? Calculate the Cpk using data prior to the out-of-control condition. Calculate the Cpk using all data since the out-of-control condition. Collect 20 additional data points to confirm the process shift, confirm stability, then calculate Cpk from data collected after the shift. Identify special causes of this latest variation and eliminate it and collect more data to verify the process is stable and under control Calculate Ppk instead of Cpk