The p-chart can have both a variable set of control limits or a fixed set of control limits. This is because the limit is dependent on the sampte size. For the p-chart, as a general guideline, use the average sample sizo method when the sample sizes fall within 45,50 or 55 ). percent of the average of all sample sizes.(10,15,20,25,30,35,40

The p-chart can have both a variable set of control limits or a fixed set of control limits. This is because the limit is dependent on the sample Size. For the p-chart, as a general guidelino, use the average sample size method when the sample sizes fall within percent of the average of all sample sizes. (10, 15, 20, 25, 30, 35, 40) 45, 50 or 55)