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earnings before interest and taxes

EBITEarnings Before Interest and Taxes

Revenue - Operating Expenses

eccentricityEarnings Before Interest and Taxes

Revenue - Operating Expenses

economicsDeviation of a conic from a circular shape

edgesstudy of production, distribution, and consumption of goods and services

effective annual yield rateline segment joining two vertices

effective interest rateYield rate taking compounding periods into effect

eigenvaluethe return on an investment or the rate owed in interest on a loan when compounding is taken into account.

elapsed timeset of scalars associated with a linear system of equations

elasticityAmount of time between two dates

electricthe change in the behavior of buyers and sellers in response to a price change for a good or service

elementthe set of physical phenomena associated with the presence and motion of matter that has a property of electric charge.

elevationan element (or member) of a set is any one of the distinct objects that belong to that set. In chemistry, any substance that cannot be decomposed into simpler substances by ordinary chemical processes.

eliminateheight above a given level, especially sea level

eliminationto remove, to get rid of or put an end to

elimination methodEliminating a variable in a system of equations to solve for another variable or variables

ellipseEliminating a variable in a system of equations to solve for another variable or variables

empirical rulea regular oval shape, traced by a point moving in a plane so that the sum of its distances from two other points (the foci) is constant

empty setProvides estimate for the spread of data in a normal distribution. 68% of the data will fall within one standard deviation of the mean. 95% of the data will fall within two standard deviations of the mean. 99.7% of the data will fall within three standard deviations of the mean

encryptionThe set with no elements

∅

endpointencoding a message such that anybody outside authorized parties cannot read it

energyend of a ray, line segment, or interval

engineeringproperty that must be transferred to an object in order to perform work on

entropythe application of science and mathematics by which the properties of matter and the sources of energy in nature are made useful to people

epsilonrefers to disorder or uncertainty

equalA letter of the greek alphabet used for math notation.

Ε ε

equalitybeing the same in quantity, size, degree, or value

=

equated timeThe state of being equal. A relationship between two quantities or two mathematical expressions, asserting that the quantities have the same value, or that the expressions represent the same mathematical object

equationdetermine time from cash flow streams

equation of a circlea statement declaring two mathematical expressions are equal

equation of a lineformula to graph a circle and the points on the circle

(x - h)^{2}+ (y - k)^{2}= r^{2}

equation of a planeformula to graph the points on a line

y = mx + b

equation of exchangeformula to graph the points in a plane

Ax + By + Cz + D = 0

equilateral triangleequation relating money, price, velocity, and quantity

MV = PQ

equivalenceA triangle with 3 equal sides

equivalentthe state or property of being equivalent.

equivalent annual costequal in value, amount, function, meaning

equivalent coordinatesformula comparing two different projects to see which one is more valuable

equivalent expressionsRelating cartesian and polar coordinates

equivalent fractionssee equations

errorTwo fractions with equal values, using a common factor to scale the numerator and denominator

estimatedifference between an observed value and the true value of a measurement.

estimate suman approximate calculation or judgment of the value, number, quantity

estimationUsing rounding to estimate the total of numbers using their rounded figures

etarough calculation of a number or quantity

euclidean normA letter of the greek alphabet used for math notation.

Η η

euclids algorithmmagnitude or length of a vector

euclids extended algorithmmethod for computing the greatest common divisor (GCD) of two numbers

eulerdivision algorithm for integers

Eulers ConstantFamous mathematician who developed Euler's constant

Eulers Formulalimiting difference between a harmonic series and natural logarithm

0.5772156649

eulers totientEquation relating 5 mathematical constants

e^{iπ}+ 1 = 0

evaluatethe number of positive integers that are relatively prime to

even numberTo calculate the value of

even numbersa whole number that is able to be divided by two into two equal whole numbers

eventNumbers divisible by 2

evil numbersa set of outcomes of an experiment to which a probability is assigned.

exabyteA number with an even number of 1s in the binary expansion

exact timemultiple of the unit byte for digital information

excel

exchange matrixA spreadsheet software

exchange raterow-reversedr or column-reversed version of the identity matrix

exercise priceThe rate to convert one unit of currency to another unit of currency

expand polynomialsthe price at which an underlying security can be purchased or sold when trading a call or put option

expanded notationWrite out the multiplication of polynomials term by term

expectedWriting out a number to show the sum of each digit multiplied by the place value

9256 = 9(1000) + 2(100) + 5(10) + 6(1)

expected frequencyresults or observations that are predicted

expected returncomputed by multiplying the probability that an event occurs by the total number of possible times that the event could occur.

Expected Frequency = (Row Total * Column Total)/N

expected valueamount of profit or loss an investor anticipates on an investment

expensepredicted value of a variable or event

E(X) = Σx_{I}· P(x)

experimentthe cost required for something; the money spent on something. A financial burden or outlay

experimental valueIn statistics, a controlled and repeatable process

exponentthe value that is measured during the experiment.

exponentialThe power to raise a number

exponential distributionof or relating to an exponent

exponential fitprobability distribution that describes the time between events in a Poisson point process

exponential growthFit a curve to a set of data using an exponential function

exponential identitygrowth whose rate increase in proportion to the total number

exponential smoothingIdentity using exponents for equivalent expressions

exportCreate smoothed data using exponential functions

αx_{t - 1}+ (1 - α)s_{t - 1}

exportsmovable goods produced within the boundaries of one country, which are traded with another country

expressiongoods and services produced in one country and purchased by citizens of another country

exterior anglefinite combination of symbols

the angle between a side of a rectilinear figure and an adjacent side extended outward.