| Data |
A
set of numerical information. |
| Data |
Set
of information. |
| Data
analysis |
A
process of deriving information from data. |
| Decagon |
A
figure with ten sides. |
| Decimal |
A
number with a dot separating the ones and tenths places in the base ten
system |
| Degree |
The
degree of a polynomial is the highest power of a variable in the
expression. If the terms contain more than one variable, the degree is the
highest value among the sums of the exponents in the individual terms. |
| denominator |
the
numeral below the line showing the number of equal parts in one whole |
| Denominator |
It
shows the number of equal parts into which the whole has been divided.
(Example: In 2/5, 5is the denominator) |
| Dependent
events |
When
the occurrence of one event has an effect on the occurrence of a following
event, the events are said to be dependent. |
| Deviation |
The
directed distance from each data value to the mean. Values below the mean
have a negative deviation, and values above the mean have a positive
deviation. |
| DIAGONAL |
a
segment that joins two nonconsecutive vertices |
| DIFFERENCE |
answer
to a subtraction problem |
| DIMENSION |
length,
height, or width of a figure |
| DIRECTIONAL |
direction
in relation to compass points |
| Discrete
graph |
A
graph containing unconnected points. |
| Distance
between two points |
The
distance between any two points located at (x1, y1) and (x2, y2) is the
square root of the quantity [(x2-x1)2 + (y2-y1)2] |
| Distance
formula |
The
formula used in coordinate geometry to find the distance between two
points. |
| Dodecagon |
A figure with twelve sides. |
| Domain of
function |
The
set of all first members (elements) of a function. |
| DOZEN |
twelve |
| Equation |
A
mathematical sentence with an equal sign. |
| Equilateral triangle |
A
triangle with equal sides and equal angles. |
| EQUIVALENT |
equal |
| equivalent fractions |
fractions
that name the same amount |
| Estimation |
To
find an approximate answer for a problem. |
| Even number |
A
whole number ending with 0, 2, 4, 6, or 8 in the ones place. |
| Experimental
probability |
Probability
that is based on trials and observations or simulation of the event. |
| Explicit
formula |
A
formula for a sequence or the sum of a series that defines a rule for
calculating a term or sum based on the term’s number. |
| EXPRESSION |
a
mathematical phrase made up of variables, numbers, and operations. |
| FACE |
flat
surface of a space figure |
| Factor |
Any number that when multiplied by another number, gives you a
product (The product is the answer to a multiplication problem).
Example: 4 x 6=24, therefore, 4 is a factor of 24 and also 6 is a
factor of 24. |
| Factor Pairs |
Two
numbers that when multiplied together give you a product. One factor pair
of 18 is 2 x 9. |
| Factor tree |
A
method of breaking down a multiplication problem into its prime factors.
For example: 12 = 2 X 2 X 3 |
| Factored
form |
The
form of a polynomial equation written as the product of linear factors. In
y = A(x - R1)(x - R2) the roots are at R1 and R2. |
| FEWER |
subtract;
less than |
| flat distribution |
a
flat distribution is one in which survey respondents liked all values
equally |
| Fractal |
A
shape that is self-similar; that is, it contains infinitely many exact
replicas of itself on various scales. |
| fraction |
a
number that expresses a part of a whole region, set, or segment |
| Fraction |
A fraction names an equal part of a whole or a part of a group.
(Example: 2/5) |
| FRACTIONAL SIZE |
size
indicated by a quotient of two integers |
| Frequency |
The
number of times an event has occurred. |
| frequency graph |
a
graph showing the number of respondents who gave each answer |
| Function |
A
set of ordered pairs such no two ordered pairs have the same first member. |
| Generalization |
A
statement that expresses some relationship that is true for all numbers in
a specified set. |
| Geometric
mean |
The
geometric mean of two numbers is the square root of their product. |
| Geometric
progression |
Also
called Geometric sequence. A sequence of numbers in which each succeeding
term is obtained by multiplying the preceding term by the same number. |
| Geometric
sequence |
A
numeric sequence in which each term is equal to the preceding term
multiplied by a constant, or un = r • u (n - 1). The constant r is
called the common ratio. |
| Graph
theory |
The
use of diagrams involving vertices and edges in finding mathematical
solutions to problems. |
| greatest common factor |
the
greatest number that is a factor of each of two or more numbers |
| Grid |
A
pattern of evenly spaced horizontal and vertical lines that form squares. |
