Making Measurements 5
6000 Series Oscilloscope User’s Guide 253
The mean is calculated as follows:
where:
x = the mean.
N = the number of measurements taken.
xi = the ith measurement result.
The standard deviation is calculated as follows:
where:
σ = the standard deviation.
N = the number of measurements taken.
xi = the ith measurement result.
x = the mean.
-2s
mean
-1s1s2s
68.3%
-3s
95.4%
99.7%
03s
x
xi
i1=
N
N
--------------=
σ
xix()
2
i1=
N
N1
------------------------------=