| Quadratic
equation |
A polynomial equation containing a variable to the second
degree. |
| Quadrilateral |
A four sided polygon Ex:
square, rectangle, trapezoid, parallelogram, rhombus |
| Quartile |
Part of a data set that contains 25% of the data. The median
of the entire set of data values is called the second quartile. The median
of the data values below the median of the set is called the first
quartile. The median of the data values above the median is called the
third quartile. |
| Quotient |
The number obtained by dividing one number into
another. (The answer to a division problem.) Example: In 32 divided by
8=4, the number 4 is the quotient. |
| Random |
Happening by chance. |
| Random numbers |
Numbers that when generated are equally likely to occur and
do not form a pattern in the sequence of numbers. |
| RANGE |
the distance between the
greatest and least values in a given set of data |
| Range of a data set |
The absolute value of the difference between the largest
value and the smallest value of a data set. |
| Range of a relation |
The set of possible values for the second coordinates in a
relation. |
| Rectangle: |
Four sided figure with four
right angles and opposite sides equal. |
| Recursive definition |
A set of statements that specifies one or more initial terms
and defines the nth term in relation to one or more of the preceding
terms. |
| Regular
Polygon |
A multi-sided figure with all sides equal in length. |
| Relation |
A correspondence between an independent variable and a
dependent variable. |
| Residual |
The difference between the y-value of a data point and the
y-value of the equation with the same x-value. Points below the graph of
the equation have negative residuals, and points above the graph have
positive residuals. |
| Right
triangle |
A triangle with one right
angle or one angle equal to 90 degrees. |
| Root |
The x-value where the graph of an equation crosses the
x-axis. Same as zeros of an equation. |
| Sample space |
In probability, the set of all possible outcomes of an
experiment. |
| scale |
the marked intervals on a
graph (i.e. the designated numbers for each line of the graph) |
| Scalene
triangle |
A triangle with no equal
sides. |
| Scattergram |
A graph that shows the relationship between two quantities. |
| Scientific notation |
Any number written as a number between 1 and 10, multiplied
by a power of 10. |
| Sequence |
A set of elements in a specific order determined by a rule
or formula. |
| Series |
The sum of the terms of a sequence. The nth partial sum, Sn,
of a series is the sum of the first n terms of its companion sequence. |
| simplest
form |
when the greatest common
factor of the numerator and denominator is one |
| Sine |
The sine of an acute angle in a right triangle is the ratio
of the length of the opposite leg to the length of the hypotenuse. |
| Skewed |
To be distributed, or stretched, in a non-symmetric way. |
| skewed
distribution |
a skewed distribution is one in which most of the survey
respondents chose values on one side of the graph (either high or low
values) |
| Skip
Counting |
Counting by a certain number for example 3, 6, 9, 12,etc. |
| Slope |
A ratio of the rate of increase (or decrease) of a line. The
slope of a line is (change in y)/ (change in x) |
| Solution |
An answer to a problem. |
| Square |
A special rectangle with all sides equal and four right
angles. |
| Square
number |
The result of multiplying a number by itself. (Example:
4x4=16) |
| Standard deviation |
The square root of the variance. It is a measure of spread
used for singlevariable data. |
| STATISTICS |
part of mathematics that
deals with collecting, organizing, and analyzing data |
| Statistics |
Various methods used to obtain numbers to characterize a
data set. |
| Statistics |
Facts about a particular subject that are collected and
arranged in the form of numbers. |
| stem-and-leaf
plot |
a graph organizing 2-digit
data with the tens on the left of a vertical line and the ones on the
right of the vertical line |
| Stem-and-leaf plots |
A display of a set of data in which each piece of data is
grouped together on a specific row and arranged in two columns. |
| Strategy |
A plan or system of how to solve a problem. |
| Sum |
The answer to an addition problem (example: 1+2=3) |
| SURFACE
AREA |
sum of the areas of each
side of a figure |
| SYMMETRY |
mirror image; a reflection
that maps the figure into itself |
| System of equations |
Two or more equations that are solved or studied
simultaneously. |
| Tangent |
The tangent of an acute angle in a right triangle is the
ratio of the length of the opposite leg to the length of the adjacent leg. |
| Theoretical probability |
Probability that is based on calculation or physical
properties of the event without actually performing or simulating. |
| TRANSLATION |
directional movement of a
figure; slide |
| Trapezoid |
A figure with four sides, only two of which are
parallel. |
| Triangle |
A figure with three sides and three angles. |
