Methods and formulas for graphs in Binomial Capability Analysis

For information on the methods used to create the P chart, go to Methods and formulas for P Chart.

The number of plotted points equals the number of samples in your study.

The cumulative % defective for the j^th sample is calculated as follows:

The reference lines on the plot are calculated as follows:

• Middle reference line: %defective. For more information go to Methods and formulas for capability statistics.
• Upper reference line: Upper bound for the %defective
• Lower reference line: Lower bound for the %defective

For more information on the confidence bounds, go to Methods and formulas for confidence intervals and bounds.