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
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Individual Distribution Pages
- Best-fit parameter estimations
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Empirical (data) histogram plotted versus model probability density function
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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
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Customer Stories
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SPC Around the World
SPC for Excel is used in 80 countries internationally. Click here for a list of those countries.