So many variables here - the strain, the seed bank, the grower, the conditions, the nutes, the lights.... it would be good to check other people's dairies for the strain you're growing... and take a look through their diaries to see what they might be doing, ask them questions (through the DM) about why they chose to do such and such... Put it this way, I've grown one auto grow that gave me an average of 2.5oz per plant... I've grown another that gave me 1/2oz... different strains, different screw ups... there's really no way to answer your question.
Go to the search bar on the main page and type in your strain.. be sure to say auto - you'll get a number of different grows to go look at... That will give you your best idea of what to expect.
Good luck!