Information Technology Reference
In-Depth Information
A
B
Linear
Linear
•
•
•
•
C
D
Quadratic
Quadratic
•
•
•
•
•
•
E
F
Both Linear and
Quadratic Components
Both Linear and
Quadratic Components
•
•
•
•
•
•
H
G
Cubic
Cubic
•
•
•
•
•
•
•
•
Figure 7.20
Examples of various polynomial functions.
significantly from which others, we ask about the shape of the function.
Two points need to be made in this context. First, magnitude differences
are reflected in the graph by vertical displacement. We therefore know that
the function has a “shape” (it is not a flat or horizontal line) because there
is a significant mean difference in the set of means; if the
F
ratio was not
significant, the function would be flat (it would be parallel to the
x
axis)
