Distribution Fitting Software & Articles

Log-Logistic Distribution

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- shape parameter ()
- scale parameter ()
- location parameter ( yields the two-parameter Log-Logistic distribution)


Probability Density Function (PDF)

Log-Logistic distribution PDF

Log-Logistic Distribution Fitting

EasyFit allows to automatically or manually fit the Log-Logistic distribution and 55 additional distributions to your data, compare the results, and select the best fitting model using the goodness of fit tests and interactive graphs. Watch the short video about EasyFit and get your free trial.

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Log-Logistic Distribution Graphs and Properties

EasyFit displays all graphs and properties of the Log-Logistic distribution, presenting the results in an easy to read & understand manner. EasyFit calculates statistical moments (mean, variance etc.), quantiles, tail probabilities depending on the distribution parameters you specify.

Random Numbers from the Log-Logistic Distribution

You can easily generate random numbers from the Log-Logistic distribution in a variety of ways:

  • directly from EasyFit
  • in Excel sheets using the worksheet functions provided by EasyFitXL
  • in your VBA applications using the EasyFitXL library

Excel Worksheet and VBA Functions

EasyFitXL enables you to use the following functions in your Excel sheets and VBA applications:

Function Name
LogLogisticPdf Probability Density Function
LogLogisticCdf Cumulative Distribution Function
LogLogisticHaz Hazard Function
LogLogisticInv Inverse CDF (Quantile Function)
LogLogisticRand Random Numbers
LogLogisticMean Mean
LogLogisticVar Variance
LogLogisticStdev Standard Deviation

Learn more: EasyFit Help on the Log-Logistic distribution