17:42 X Assignment on SPC hig.instructure.com a : In the lecture on SPC , you have learnt on a . How to determine if one process is stable or not b . What is the process capability and how to calculate the process capability index Cpk c . Why there is a need to use control charts and what types of control charts should be applied d . How to construct the control charts e . How to judge if one process is under the control or out of control In this assignment , you are required to use the data set given in SPC excercise.xls to a . Decide if the process is stable or not , also provide your reasoning b . Estimate Cpk of this process c . Determine if this process is under the control d . Construct the X - bar ( using s - method ) and R control charts . Your references are Introduction on SPC.doc and SPC.pptx D