This video explains how to calculate centreline, lower control limit, and upper control limit for the p-chart. Equal and unequal sample sizes are discussed. How to Construct a Control Chart in Excel: • How to Construct a Control Chart in Excel See also c-chart • SPC 4: c - chart (Control Chart for number... x-bar chart • Statistical Process Control | Chart for Me... R-chart • Statistical Process Control | R-Chart (Co...