Rate (mathematics) - Terms Based On Rates

Terms Based On Rates

In chemistry and physics:

• Speed, being the distance covered per unit time, e.g. miles per hour and meters per second

• Acceleration, the rate of change in speed, or the change in speed per unit time

• Radioactive decay, the amount of radioactive material in which one nucleus decays per second, measured in Becquerels
• Reaction rate, the speed at which chemical reactions occur
• Volumetric flow rate, the volume of fluid which passes through a given surface per unit time, e.g. cubic meters per second

In computing:

• Bit rate, the number of bits that are conveyed or processed by a computer per unit of time
• Symbol rate, the number of symbol changes (signalling events) made to the transmission medium per second
• Sampling rate, the number of samples (signal measurements) per second

In finance:

• Interest rate, the price a borrower pays for the use of money they do not own, usually expressed as a percentage rate over the period of one year; see also for related rates
• Exchange rate, how much one currency is worth in terms of the other
• Inflation rate, a measure of inflation change per year
• Rate of return, the ratio of money gained or lost on an investment relative to the amount of money invested
• Tax rate, the tax amount divided by the taxable income

Miscellaneous definitions:

• Rate of reinforcement, number of reinforcements per time, usually per minute
• Heart rate, usually measured in beats per minute
• Unemployment rate, a ratio between those in the labor force to those who are unemployed
• Birth rate and mortality rate, the number of births or deaths scaled to the size of that population, per unit time
• Literacy rate, the proportion of the population over age fifteen that can read and write