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Definition:
Remember:
A data value that is much
higher or lower than the
other data values in the
set.
Basically, the outlier is
the number that
stands out.
OUTLIER
Example:
Picture:
2, 4, 6, 4, 7, 2, 3, 5, 3, 15, 6, 4
In this data set,
15 is an outlier.
(15 is a much higher number than the others.)
Which one is the outlier?
Definition:
Remember:
Each item in a MATRIX is
an element.
A rectangular
arrangement of
numbers.
More Information:
This 4 is
an
element.
MATRIX
The number of rows and
columns of a MATRIX
determines its size.
Picture:
(2 4 7 8)
(9 0 3 2)
(7 1 5 3)
This matrix A has three rows and four
columns.
We say it is a 3 x 4 matrix.
Definition:
Remember:
Direct:
An equation that can be
If a number on one side of
expressed in the form y = kx,
the equation increases,
where k ≠ 0.
then the number on the
•If x increases, so does y.
•If x decreases, so does y.
other side of the equation
will also increase.
DIRECT
Example:
VARIATION
y=kx
The more hours (x)
worked, the more
money (y) earned.
Definition:
Remember:
An equation that can be
expressed in the form xy = k.
If x increases, y decreases.
If x decreases, y increases.
Example:
Inverse:
If one of the numbers on one
side increases, then the other
number on that side of the
equation will decrease.
INVERSE
VARIATION
The more people painting the
school (x), the less time (y) it
takes to do the job.
Definition:
The four parts into which
the coordinate plane is
divided by its axes.
Picture:
QUADRANTS
I, II, III, IV are all Quadrants.
means 4
Picture: