But here I’ll refrain from getting deep into the exotic maze of greek squiggles and contain myself to three of them—the sigma, the beta and the alpha. What are they? The sigma, ***σ:***Say ...
or the scale parameter for the fitted lognormal curve SIGMA= Specify threshold parameter for fitted beta curve, exponential curve, gamma curve, lognormal curve, and Weibull curve THETA= Specify scale ...