Yeah! I can answer - it goes something like this:
If you are an expert, and do everything right, you can yield up to, about 5 1/4 oz. dry - max. Maybe just a bit more, if you are real good (or real lucky).
If you are an average, experienced, grower; you will get about half that (2 3/4 oz. dry).
If you are a complete newb and this is your first grow you will be lucky to get a quarter of that (about 1 1/2 oz. dry). That is, if your plants make it to harvest at all! The more studying you do now will greatly improve your odds (and yield)!
Now, if your "skill level" is somewhere in between these three examples - your yield will be somewhere in between too. Just remember this "The less you know about growing - the more "dumb luck" has to do with it!".