3.91 FAQ-329 How to plot a p-p plot with confidence band?

Plot-weibull-P-P-Plot

Last Update: 12/7/2025

To plot a p-p plot with confidence band, you can

1. Choose menu Plot > Statistical: Probability Plot
2. In the opened dialog, make sure Confidence Band check box is selected

Or, you can plot a p-p plot with confidence interval with the Distribution Fit tool (Statistics: Descriptive Statistics: Distribution Fit)

Following distributions are available in either way

Normal	Exponential	Gamma	Log-logistic
Lognormal	2-Parameter Exponential	Smallest Extreme Value	Gaussian
3-Parameter-Lognormal	Weibull	Largest Extreme Value	Folded Normal
	3-Parameter Weibull	Logistic	Rayleigh

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Keywords:weibull fit, weibull plot, confidence intervals, probability plot, p-p plot, confidence band