HP 83480A User Manual

General Purpose Oscilloscope Menus
Dene Measure Menu
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mean, stddev
Mean and stddev (standard deviation) calculates the mean and standard
deviation of the automatic measurement results. Mean is the statistical
average of all results for a particular measurement. Standard deviation
measures the dispersion of those measurement results.
Figure 10-2 shows the mean and standard deviation more graphically.
Standard deviation is represented by the Greek letter sigma (  ). For a
Gaussian distribution, two sigma ( 6 1  from the mean) is where 67 percent
of the
data points
reside
,
and
six
sigma
(
6
3

from
the
mean)
is
where
99.7 percent
of the
data
points
reside
.
Figure
10-2.
Standard
deviations
of
a
Gaussian
distribution.
K
ey
Path
4
Dene
meas
5
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Statistics
mean,
stddev
10-20

HP 83480A Specifications

General

Brand	HP
Model	83480A
Category	Measuring Instruments
Language	English