Information Technology Reference
In-Depth Information
200
150
100
50
0
0
20
40
60
80
100
Depth
F
IGURE
7.
The number of events observed ateach depth;depths1and2have
been omitted for reasonsofscale.
200
Number of events
Estimated number, on depth 1−100
150
100
50
0
0
20
40
60
80
100
Depth
F
IGURE
7.
The number of events observed ateach depth;depths1and2have
been omitted for reasonsofscale. Thesolidlineshows a best-fit to thepoints.
Fig. 15.2
Curve fitting. In the
upper
graph, it is an error to show a line that implicitly interpolates
the points, as such interpolation is not meaningful. The
lower
graph shows the quality of the fitted
line, visualizing information that would not otherwise be intuitive
The lower graph in Fig.
15.2
shows the same events, without the jagged line. It
instead shows, as a solid line, a linear regression of log
(
events
)
on log
(
depth
)
that
has been used to find parameters
C
and
p
for the equation
depth
p
events
=
C
·
−
1
.
