A normal probability plot is a graphical tool that helps you check whether your data follows a normal distribution, which is often assumed or required in statistical process control (SPC).

Note that the PROBPLOT statement creates a normal probability plot for DIAMETER by default. The nonlinearity of the point pattern indicates a departure from normality. Since the point pattern is ...

Click the link below and save the following JMP file to your Desktop: Unemployment Rates by State 2000; Proceed as in the Histogram tutorial to get the following JMP output:. Click the red down arrow ...

The probability plot in Figure 1 is an example of this type of scenario. In this case, normality clearly cannot be assumed; the p-value is less than 0.05 and more than 5 percent of the data points ...

2. Missing Outlier Data. Normal probability plots don’t tell you how many outliers there are or where they are. You can use them to see whether or not there are any outliers in your data set ...

Creating a Normal Probability-Probability Plot See CAPPP1 in the SAS/QC Sample Library: The distances between two holes cut into 50 steel sheets are measured and saved as values of the variable ...