Yield depends on a lot of variables. There is no standard yield from any plant. Strain, soil, sun, season, nutrients are just some of them. You can actually yield more off an indoor plant as the growing conditions can be more easily controlled. Indoors you can emulate the perfect environment 24hrs a day and veg the plant for as long as you like. Zandor has posted pics of an indoor plant yielding 3.5 pounds. And I'm sure he could do even better.