Q ratio, also known as Tobin's q, is an economics term for the ratio between the market value and replacement value of the same physical asset.
Q ratio or Q-ratio may also refer to: Q-ratio (poker), the relation of a poker player's stack to the tournament players' average stack q-ratio in selection cutting in forestry anabolic to androgenic ratio in pharmacology applications such as methasterone
See also Q value (disambiguation) Q factor