Hey everyone, welcome to this lecture how to create an NP chart on Minitab. I have added this data on a spreadsheet and uploaded it in the resources section of this lecture. Please download the data and paste it to Minitab. Choose stat, control charts, attributes chart. NP, I repeat, to stat, control charts, attributes charts, np in variables, enter number of defective assemblies. In subgroup sizes, enter hundred click NP chart options.

Then click the tests tab. Choose perform all tests for special causes. Then, click OK in each dialog box here, you Go. This is the NP chart. Let's talk about its inference. You will observe that unlike the control charts for continuous data, where there were two charts, for discrete data, there is only one chart.

Sample 12 is above the upper control limit, indicating that a special cause may have affected the number of defectives for this slot. You should investigate what special causes may have influenced the out of control number. That brings us to the end of this lecture. You will now go through an activity