Math Glossary Letter M macaulay duration noun the weighted average term to maturity of the cash flows from a bond magic sum noun sum of numbers in any row, column, or diagonal of the magic square magnitude noun the size, extent, or importance of something maintenance cost noun The cost of any repairs and maintenance that are necessary to preserve a fixed asset's working condition makehams formula noun an actuarial formula expressing the present value of a payment stream in terms of its repayments instead of the payments themselves map scale noun he ratio of a distance on the map to the corresponding distance on the ground map scale noun the relationship between a distance on a map and the corresponding distance on the earth margin noun the current level of an activity margin of error noun a statistic expressing the amount of random sampling error in the results of a survey.σp + z-score markdown noun how much less a companys selling price is than the amount the item costs the company. market noun a place where buyers and sellers can meet to facilitate the exchange or transaction of goods and services. markov chain noun a stochastic model describing a sequence of possible events in which the probability of each event depends only on the state attained in the previous event. markup noun how much more a companys selling price is than the amount the item costs the company. mass noun a physical quantity of matter in an object. Mass is measured in terms of the weight of a body. matrix noun a rectangular array of numbers or symbols which are generally arranged in rows and columns maximum noun the greatest or highest amount possible or attained mcnemar test noun used to determine if there are differences on a dichotomous dependent variable between two related groups. md5 noun MD5 (message-digest algorithm) hashing algorithm is a one-way cryptographic function that accepts a message of any length as input and returns as output a fixed-length digest value to be used for authenticating the original message mean noun A statistical measurement also known as the average mean absolute deviation noun the average distance between each data point and the mean mean absolute percentage deviation noun a measure of prediction accuracy of a forecasting method in statistics mean absolute percentage error noun a measure of prediction accuracy of a forecasting method in statistics. mean percentage error noun the computed average of percentage errors by which forecasts of a model differ from actual values of the quantity being forecast. measure noun estimate or assess the extent, quality, value, or effect of (something). median noun the value separating the higher half from the lower half of a data sample, median absolute deviation noun a robust measure of the variability of a univariate sample of quantitative data megabyte noun a multiple of the unit byte for digital information megahertz noun one million hertz mensuration noun the act of measuring; measurement mesh noun A description of an object by a collection of small simple shapes metaphone noun a phonetic algorithm, published by Lawrence Philips in 1990, for indexing words by their English pronunciation meter noun the primary unit of length in the International System of Units meter noun the basic unit of length in the SI system of units. The meter is defined to be the distance light travels through a vacuum in exactly 1/299792458 seconds. An interesting effect of the definition of the meter this way is that it fixes the speed of light in a vacuum to the exact value of 299,792,458 m/s. microgram noun one millionth of a gram. microliter noun one millionth of a liter. micrometer noun metric unit of measure for length equal to 0.001 mm microsecond noun a unit of time in the International System of Units equal to one millionth of a second midpoint noun the middle point of a line segment. It is equidistant from both endpoints. It bisects the segment. mileage noun a number of miles traveled or covered. military phonetic alphabet noun a set of 26 words that are used to spell out letters when communicating over the radio or telephon military time noun time is based on a 24 hour clock millenium noun period of a thousand years, millihertz noun A unit equal to one-thousandth of a cycle per second. milliliter noun one thousandth of a liter millimeter noun one thousandth of a meter millisecond noun a unit of time in the International System of Units equal to one thousandth of a second and to 1000 microseconds minimum noun the least or lowest amount possible or attained minute noun Unit of time equal to 60 seconds missing average noun A score or rank required to reach a certain average mixed number noun a number consisting of an integer and a proper fraction. mixture noun a substance made by mixing other substances together. mnemonic noun a device such as a pattern of letters, ideas, or associations that assists in remembering somethingExamples include ROYGBIV or Rainbow Colors mode noun the number that occurs the most in a number set modified internal rate of return noun a financial measure of an investment's attractiveness. MIRR modified payback period noun Year in which the cumulative positive cash flows from investment exceed the total negative cash flows modular exponentiation noun the remainder when an integer b (the base) is raised to the power e (the exponent), and divided by a positive integer m (the modulus) modulus noun the remainder of a division, after one number is divided by another.a mod b modus ponens noun If conditional statement if p then qp --> q modus tollens noun If conditional statement if not p then not q!p --> !q moment noun a function are quantitative measures related to the shape of the functions graph moment generating function noun the expectation of a function of the random variable moment of inertia noun quantitative measure of the rotational inertia of a body momentum noun the quantity of motion of a moving body, measured as a product of its mass and velocity. money noun Any item or verifiable record that is generally accepted as payment for goods and services and repayment of debts, such as taxes money multiplier noun A one-dollar increase in the monetary base causes the money supply to increase by more than one dollar. The increase in the money supply is the money multiplier. monomial noun a polynomial which has only one term. Constants and variables are monomials as well as one term polynomials monte carlo simulation noun a model used to predict the probability of a variety of outcomes when the potential for random variables is present. month noun a unit of time, used with calendars, that is approximately as long as a natural orbital period of the Moon morse code noun method used in telecommunication to encode text characters as standardized sequences of two different signal durations, called dots and dashes, or dits and dahs. Morse code is named after Samuel Morse, one of the inventors of the telegraph. mortality noun a measure of the number of deaths in a particular population, scaled to the size of that population, per unit of time. mortgage noun an agreement between you and a lender that allows you to borrow money to purchase or refinance a home and gives the lender the right to take your property if you fail to repay the money you have borrowed. mosteller formula noun Used in BMI, square root of the height (cm) multiplied by the weight (kg) divided by 3600 mu noun A letter of the greek alphabet used for math notation.Μ μ muliplication equality noun when we multiply both sides of an equation by the same number, the two sides remain equal mulitiplication table noun a table showing multiples of a number mulitiplicative inverse noun a number which when multiplied by x yields the multiplicative identity, 1 multifactorial noun generalisation of a factorial in which each element to be multiplied differs from the next by an integer multinomial distribution noun a generalization of the binomial distribution. multiple noun the product of any quantity and an integer multiplication noun math operation involving the product of elements multiplication array noun an arrangement of rows or columns that matches a multiplication equation multiplication comparison noun a process or method in which one can determine whether a number is smaller, greater, or equal to another the product of two other numbers according to their values. multiplication property of inequality noun we can multiply or divide both sides of the inequality by the same number and get an equivalent inequality multiplication tables noun a table showing multiples of a number multiplicative comparison noun comparing two things together that need to be multiplied. multiplicative identity noun multiplying any number by 1 returns the number multiply verb to add equal groups* multiplying verb to increase in number especially greatly or in multiples