Agilent Technologies InfiniiVision 4000 X-Series User Manual page 253

The mean is calculated as follows:
where:
• x = the mean.
• N = the number of measurements taken.
• x
The standard deviation is calculated as follows:
where:
•
• N = the number of measurements taken.
• x
• x = the mean.
Agilent InfiniiVision 4000 X-Series Oscilloscopes User's Guide
-3σ -2σ -1σ
∑
=1
¯ =
= the ith measurement result.
i
∑
( − ¯ )
=1
=
= the standard deviation.
= the ith measurement result.
i
1σ 2σ 3σ
2
14
Measurements
253