Agilent Technologies 7000B Series User Manual page 173

The mean is calculated as follows:
where:
The standard deviation is calculated as follows:
where:
Top
The Top of a waveform is the mode (most common value) of the upper
part of the waveform, or if the mode is not well defined, the top is the
same as Maximum. The Y cursor shows the value being measured.
InfiniiVision 7000B Series Oscilloscopes User's Guide
N

x
i
=
i 1
=
x ------------- -
N
x = the mean.
N = the number of measurements taken.
th
x = the i measurement result.
i
N
2

 
x – x
i

i = 1
= ----------------------------- -
N 1 –
 = the standard deviation.
N = the number of measurements taken.
th
x = the i measurement result.
i
x = the mean.
Measurements and Math Functions 5
173