Control Chart Excel Template

There are rules that most people,,,, "follow to determine if the process is ""out of control"" such as:",,,, ,,,, ,One or more control points is outside (+ or -) 3 standard deviations from the mean,,,, ,Two of three control points is outside (+ or -) 2 standard deviations from the mean,,,, ,Four of five successive control points is outside (+ or -) 1 standard deviation from the mean,,,, ,Six or more successive control points clearly shows an up or down trend from the mean,,,, ,,,, "Also, you should make sure the process is stable by looking at the Range Chart - is this chart out of control If yes,",,,, then the Upper and Lower Control Limits that have been calculated are not reliable..