32
4
FOR GREATER USE OF THE PRINTER
32
FOR GREATER USE OF THE PRINTER
Chapter
4
Select a standard deviation calculating expressions.
There are two types of calculating expression.
Details of settings
σ
n
When all data in a group is used, and the standard deviation of the group is obtained.
σ
n-1
Several pieces of sample data in a group are used, and the standard deviation of the
group is estimated from the sample data.
Caution in selection
σ
n-1
calculates the standard deviation only with the sample data extracted from all print data.
Therefore, if it is used when the quantity of data is small, the reliability of the value becomes
low.
Name of settings
17: Standard Deviation
Selection
0.
σ
n
(initial value)
1.
σ
n-1
17: Standard Deviation
* This setting item is necessary
when the GT/ST Print Format setting is 2 - 4.
σ
n
○
○
○
○
○
○
○
○
○
Group
All data in the group is used, and the
standard deviation is obtained.
σ
n
χ
i
χ
–
(
)
2
i
1
=
n
∑
n
------------------------
=
Only several points of sample data are used, and
the overall standard deviation is estimated.
σ
n-1
○
○
○
○
○
○
○
○
○
Group
σ
n
1
–
χ
i
χ
–
(
)
2
i
1
=
n
∑
n
1
–
------------------------
=
Содержание M525B
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