Data analysis

 Briefly describe the need and use for quality control tools like control charts. Calculate the lower and upper control limits for an xbar, s, p and c chart. Know in what situations it is appropriate to use as xbar, s, r, p or c chart. Identify a control chart that is in control or out of control. Distinguish between attributed and non-attributed variability. Identify k subgroups and n observations. Define and describe the issues of autocorrelation or dependence in sampling. Be able to describe and interpret a control chart.