What distribution models my data the best?
Gamma?
Normal?
Exponential?
Lognormal?
Something else?
Watch a Quick Video Highlighting Our Distribution Fitting Capabilities
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Distribution Fitting and SPC for Excel
Sometimes you are not sure what type of distribution your data follows. Our SPC for Excel software makes it easy to fit distributions. The software includes 14 distributions that can be fitted to your data:
Exponential
Exponential - Two Parameter
Gamma
Gamma - Three Parameter
Largest Extreme Value
Logistic
LogLogistic
LogLogistic - Three Parameter
LogNormal
LogNormal - Three Parameter
Normal
Smallest Extreme Value
Weibull
Weibull - Three Parameter
Distribution Fitting Features
Individual Distribution Pages
Best-fit parameter estimations
Empirical (data) histogram plotted versus model probability density function
P-P plot (empirical continuous distribution function vs theoretical continuous distribution function)
Summary Page
Models rated by AIC (Akaike information criterion)
Anderson-Darling statistics (with p value) and LRT (likelihood ratio test) for goodness of fit
Shape, location, scale and threshold
Easy to navigate from summary page to individual distribution