ratio
quotient of two numbers or quantities of the same kind
alcohol by volume
measure of how much alcohol is in a beverage
compression ratio
ratio of the volume of a combustion chamber from its largest capacity to its smallest capacity
cloud cover
fraction of the sky obscured by clouds when observed from a particular location
odds ratio
statistic quantifying the association between two events
factor of safety
factor by which an engineered system's capacity is increased over the expected requirement to ensure safety in the face of error or uncertainty
sail area - displacement ratio
how much sail a boat carries relative to overall weight
mass ratio
measure of the efficiency of a rocket based on its propellant's mass
coverage ratio
pension fund economic indicator
hazard ratio
ratio of the hazard rates corresponding to the conditions described by two levels of an explanatory variable
NC ratio
measurement used in cell biology
Aldosterone-to-renin ratio
blood concentration
diagnostic odds ratio
measure of the effectiveness of a diagnostic test
Lexis ratio
ratio used in statistics where the outcome has or is two valued
utilization factor
ratio of the time that a piece of equipment is in use to the total time that it could be in use
elasticity
responsiveness of one economic variable to a change in another (e.g. supply or demand as a function of changed price, cross-price, income, wealth, advertising, etc.), ranging from inelastic to elastic
lift-to-drag ratio
aerodynamic efficiency of how far an aircraft can move forward without engine power for every meter it sinks
relative volatility
measure of vapor pressures of the components in a liquid mixture
leverage
the use of borrowed funds rather than fresh equity in the purchase of an asset
modulus
tandwheels
difference quotient
expression in calculus
Sharpe ratio
measure of an investment's risk premium
molar quantity
class of intensive physical quantities measured per amount of substance
cephalic index
Ration of width to length of the head of an organism
Haller index
assessment of chest CT: transverse width of chest cavity/narrowest sternovertebral depth
productivity
average measure of the efficiency of production
relative humidity
ratio of the partial pressure of water vapor in humid air to the equilibrium vapor pressure of water at a given temperature
figure of merit
quantity used to characterize performance
rate of surplus value
in Marxian economics, the ratio of the total amount of unpaid labor done to the total amount of wages paid
information gain ratio
in decision tree learning, a ratio of information gain to the intrinsic information, aiming to reduce a bias towards multi-valued attributes
interval ratio
ratio of the frequencies of the pitches in a musical interval
Mills ratio
theory
yield
the percent of students who choose to enroll in a particular college or university after having been offered admission
Log reduction
measure of decontamination
albedo
ratio of reflected radiation to incident radiation
Bodenstein number
ratio of the amount of substance introduced by convection to that introduced by diffusion
Sortino ratio
Measurement in finance
odds
ratio of the probability that an event will happen to the probability that it will not happen
coefficient of performance
ratio of useful heating or cooling provided to work required
sex ratio
ratio of males to females in a population
void ratio
dimensionless quantity related to porosity
total expense ratio
Measure of the total cost of an investment fund
power usage effectiveness
indicator: ratio that describes how efficiently a computer data center uses energy; specifically, how much energy is used by the computing equipment (in contrast to cooling and other overhead)
performance per watt
type of figure of merit describing computer energy efficiency