HP 54710A - Page 121

Mean is calculated as:
µ
n
=
∑
x
n
;
(
1
≤
n
≤
65,534
)
.
µ
n
=
µ
n
−
1
(
n
−
1
)+
x
n
;
n
=
65,535.
µ
= mean
n
= count since last statistics reset
x
= measurement result
Standard deviation is calculated as:
σ
=



n
∑
x
2
−(
∑
x
)
2
n
(
n
−
1
)



−
1
⁄
2
;
(
2
≤
n
≤
65,534
)
.
µ
2
n
=
µ
2
n−
1
(
n
−
1
)
+
x
2
n
;
n
=
65,535
σ
=



n
[
µ
2
n
−(µ
n)
2
]
n−
1



−
1
⁄
2
;
n
=
65,535.
σ
= standard deviation
n
= count since last statistics reset
x
= measurement result
min, max
Min (minimum) and max (maximum) are the absolute extremes of the
automatic measurement.
Define Measure Menu
Statistics
7–12