A&D BA-T Series Instruction Manual page 44

Statistical calculation function
Usage
This mode processes weighing values statistically and displays/outputs the result.
Calculation items available for display/output include the number of data, sum, maximum, minimum,
range (Max-Min), mean, standard deviation, coefficient of variation and relative error. You can select
these output data in four steps on the [Statistical calculation setting] screen.
You can delete incorrectly input data from the [Statistical calculation results] screen.
Statistical results are initialized if the statistical calculation function is disabled or the power is turned off.
The standard deviation, coefficient of variation and relative error are calculated with the following
formulas.
Standard deviation ＝
Coefficient of variation (CV) ＝
Relative error of the maximum value (MAX%) ＝
Relative error of the minimum value (MIN%) ＝
If the minimum display digit is disabled for any data, the calculation result is displayed with the minimum
display digit disabled.
(The minimum display digit is rounded off)
If the statistical calculation function is enabled, you cannot change the application, unit of measure or
readability.
If you configure this display, the HOME screen changes to the weighing screen with the statistical
calculation function.
Display settings: HOME key
1 Statistical calculation results button
2 PRINT button
2
N･Σ(Xi)
N･(N - 1)
Standard deviation
Mean
APP button
Statistical calculation function button
HOME key Weighing screen with the statistical calculation function
2
- (ΣXi)
･100 (%)
Maximum - Mean
Mean
Minimum - Mean
Mean
Select [ON].
44
Where Xi is the ith weighing value and
N is the number of data.
･100 (%)
･100 (%)
[Application] settings screen