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Statistical Calculus
key
operation
mean
standard
deviation
sample
standard
deviation
Example: Consider the following data that
corresponds
temperature sensors covering an area to be
monitored: 15, 14, 11, 15, 13, 13, 14, 12.
Calculate
You should first set the SD Mode pressing
, and then clear statistical memory by means
of
already input following the key sequence:
to
the
s s
,
, , ,
x n
-
n
n
1
(
)
(
formula
1
n
å
=
x
x
n
=
i
1
1
n
å
s
=
n
n
=
i
s
=
-
n
1
n
readings
å
x
and
. Then, data can be
37
)
i
(
)
2
-
x
x
i
1
1
n
(
å
-
x
i
-
1
=
i
1
of
different
å
2
x
.
15
14
11
15
13
14
12
)
2
x
(
)
(
)
(
)
(
)
(
)
(
)
(
)
(
)
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