Hello, I used PROC GENMOD for Gamma distributions, and the scale parameter was estimated, which is . Can I estimate the using GENMOD procedure?
Thank you in advance..
It's not clear to me whether you have covariates or not. There is an example of fitting a gamma-distributed response in the PROC GENMOD documentation. For the intercept-only example with a log link, the doc says "the intercept is the estimated log mean of the fitted gamma distribution so that the mean ...is mu = exp(Intercept)."
For general models, the mean is conditional on the covariates (through the link function). For a particular choice of covariates , the conditional mean is mu(x) = inverse_link(x`*beta ).
The predicted values available using the PRED= option in the OUTPUT statement provide the estimate of the mean (mu) in the population defined by each observation.
Don't miss out on SAS Innovate - Register now for the FREE Livestream!
Can't make it to Vegas? No problem! Watch our general sessions LIVE or on-demand starting April 17th. Hear from SAS execs, best-selling author Adam Grant, Hot Ones host Sean Evans, top tech journalist Kara Swisher, AI expert Cassie Kozyrkov, and the mind-blowing dance crew iLuminate! Plus, get access to over 20 breakout sessions.
ANOVA, or Analysis Of Variance, is used to compare the averages or means of two or more populations to better understand how they differ. Watch this tutorial for more.
Find more tutorials on the SAS Users YouTube channel.