# GMAT quantitative – 32 Words   integer

any natural number or its negative, or zero

unit digit

a straight line from the center to the perimeter of a circle

product

a quantity obtained by multiplication

factor

any of numbers that form a product when multiplied together

multiple

the product of a quantity by an integer

numerator

the dividend of a fraction

denominator

the divisor of a fraction

rational number

an integer or the quotient of two integers

irrational number

a real number that cannot be expressed as a rational number

prime number

an integer that has no integral factors but itself and 1

integer

any natural number or its negative, or zero

unit

a single undivided whole

rational number

an integer or the quotient of two integers

constant

a number representing a quantity with a fixed value

variable

a quantity that can assume any of a set of values

convex

curving or bulging outward

a four-sided polygon

congruent

corresponding in character or kind

vertex

the point of intersection of lines

union

a set containing only the members of two or more given sets

intersection

the set of elements common to two or more sets

mutually exclusive

unable to be both true at the same time

quartile

a division of an ordered distribution into four parts

median

relating to or situated in or extending toward the middle

mode

the most frequent value of a random variable

mean

an average computed by adding some function of the numbers

percentile

(statistics) any of the 99 numbered points that divide an ordered set of scores into 100 parts each of which contains one-hundredth of the total

standard deviation

the square root of the variance

range

set of values of a variable for which a function is defined

relative frequency

the ratio of the number of observations in a statistical category to the total number of observations

random variable

a variable quantity that is random

diameter

the length of a straight line through the center of a circle 