There are two standard parameters for the logistic distribution: mean and scale. The mean parameter is the average value, which for this distribution is the same as the mode, since this is a symmetrical distribution.
After you select the mean parameter, you can estimate the scale parameter. The scale parameter is a number greater than 0. The larger the scale parameter, the greater the variance. The scale parameter’s symbol is:
To calculate a more exact scale, you can estimate the variance and use the equation:
