Hi all! Just got minitab two weeks ago and am still scratching my head on how to use it. I was given a study with results for analysis. The gage counts colony forming units (CFU) on a patch or petri dish. The gage reports counts like 65 or 374 colonies of germs for each petri disk. We did two operators with three trials per operator. I tried the 2 sample Poisson rate in basic stats but that does not tell me the repeatability or reproduceability. I would (if I am not crazy like to stick to defect count per unit if possible). If that does not work, how about a two factor crossed random ANOVA model with interaction in the gage study tab off of the quality tools tab? Can I resolve differences between operators, and interactions with samples with attribute data in counts? Should I treat the data as variables and forget the unit area as it is all the same unit size? Appriciate any thoughts.