I have a lognormal distribution and need to calculate an arithmetic mean and standard deviation. I can get these using the code below. The problem is that I need to also calculate confidence intervals using mean and stdev and I need to output these values to a dataset so I can do the calculation:   proc univariate data=have; var x; histogram x/dist=lognormal; run;   How do I output this?: Bonus points if you can figure out how I can get confidence intervals for the mean and stdev below. 🙂   ... View more