How to Interpret the Mean & Standard Deviation on a Control Chart. The extent to which products meet specifications needs to be systematically monitored in a production process.

cinfill = ywh coutfill = yellow cconnect = salmon cframe = bigb; label _subx_ = 'Lower Cusum/Std Dev'; run; The central line for the primary (cusum) chart is suppressed with the NOCTL option, and the ...