NP Chart Example

Note: When you generate an NP chart and select Capability, JMP launches the Binomial Fit in Distribution and gives a Binomial-specific capability analysis.

The following example uses the Washers.jmp data table.

1. Select Help > Sample Data Library and open Quality Control/Washers.jmp.

2. Select Analyze > Quality and Process > Legacy Control Charts > NP.

3. Select # defective and click Process.

4. Change the Constant Size to 400.

5. Click OK.

Figure 12.23 NP Chart 

An NP chart for the number of defects appears. Points 4 and 9 are above the upper control limit.

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