what econ class did you take? that's not ROI that's simply getting your money, back, breaking even.
Breaking even means 100% ROI, no? Enlighten me.
depends on who's telling it. Normally yes, though some would call 100 percent ROI a doubling of your investment.
The term itself merely means that you get an income from your investment.
Logic dictates that any ROI less than 1 % is essentially taking a loss (even on the investment of your time into evaluating wether the investment is worthwhile or not) Some would disagree with me that the sweat equity from learning and refining your research would be a sort of intrinsic return as you've gained general knowledge.