Rates

In mathematics, the derivative is a fundamental tool that quantifies the sensitivity to change of a function's output with respect to its input. The derivative of a function of a single variable at a chosen input value, when it exists, is the slope of the tangent line to the graph of the function at that point. The tangent line is the best linear approximation of the function near that input value. The derivative is often described as the instantaneous rate of change, the ratio of the instantaneous change in the dependent variable to that of the independent variable. The process of finding a d

rate at which one currency will be exchanged for another

thumb|300px|The gradient, represented by the blue arrows, denotes the direction of greatest change of a scalar function. The values of the function are represented in greyscale and increase in value from white (low) to dark (high).

Flux describes any effect that appears to pass or travel (whether it actually moves or not) through a surface or substance. Flux is a concept in applied mathematics and vector calculus which has many applications in physics. For transport phenomena, flux is a vector quantity, describing the magnitude and direction of the flow of a substance or property. In vector calculus, flux is a scalar quantity, defined as the surface integral of the perpendicular component of a vector field over a surface.

number of children a woman is expected to have barring select circumstances

ratio (usually expressed as a percentage) at which a business or person is taxed

the proportion of deaths from an infectious disease compared to the number of diagnosed cases

rate at which energy is absorbed by the human body when exposed to electromagnetic field

instantaneous rate of change of the function

percentage of views on a certain web page that made a desired click

Lethality (also called deadliness or perniciousness) is how capable something is of causing death. Most often it is used when referring to diseases, chemical weapons, biological weapons, or their toxic chemical components. The use of this term denotes the ability of these weapons to kill, but also the possibility that they may not kill. Reasons for the lethality of a weapon to be inconsistent, or expressed by percentage, can be as varied as minimized exposure to the weapon, previous exposure to the weapon minimizing susceptibility, degradation of the weapon over time and/or distance, and incor

frequency at which a display hardware displays a new image

frequency with which an engineered system or component fails

time rate of change of a physical quantity in a moving medium

the price an advertiser has to pay for 1000 ad impressions on a single web page

relative profitability of an investment project, a capitalist enterprise or a whole capitalist economy

rate at which a convergent sequence approaches its limit

measure of processing speed: the average number of instructions executed for each clock cycle

average number of daughters per woman

quantity of process intensivity (mathematics)

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twice the bandwidth of a bandlimited function or channel

difference between the number of immigrants and emigrants per time and divided by population

Statistics in cricket

in telecommunication and information theory, the proportion of the data-stream that is useful

physical quantity that describes the rate of change of the deformation of a material

in Marxian economics, the ratio of the total amount of unpaid labor done to the total amount of wages paid

average number of runs a batsman (or the batting side) scores in an over of 6 balls in cricket

success rate of becoming pregnant

the average number of clock cycles per instruction

measure of the passage of water vapor through a substance

measurement of employment

the online advertising cost per view

level of measurement meaningful as a divisor (except when =0); has non-arbitrary zero point; often a scalar magnitude (>=0)

computer language processing metric

percentage of a population that is not illiterate

in meteorology, the rate of change of shape of fluid bodies