Specifications

40
9-13. Statistical Calculation Mode
The statistical calculation mode statistically calculates the weight data, and displays or outputs the
results. To use the statistical calculation mode, set the "Application function (
apf)" parameter of
"Application (
ap fnc)" in the function table to "2", as described below.
Statistical items available are number of data, sum, maximum, minimum, range (maximum-minimum),
average, standard deviation, coefficient of variation and relative error. What statistical items to output
can be selected from the four modes in the function table.
The wrong data input can be canceled by the key operation, if immediately after the input.
Turning the balance off will delete the statistical data.
The standard deviation, coefficient of variation and relative error are obtained by the equation below:
Standard deviation = where Xi is the i-th weight data, N is number of data.
Coefficient of variation (CV)= x 100 (%)
Relative error of maximum value = x 100 (%)
Relative error of minimum value = x 100 (%)
Note
When data with the minimum weighing value turned off are used in the statistical calculation,
results will be displayed with the minimum weighing value turned off. (The minimum weighing
value will be rounded off.)
9.13.1. Getting Started
Switching To The Statistical Function Mode (Changing The Function Table)
1 Press and hold the SAMPLE key until of
the function table is displayed, then release the key.
2 Press the
SAMPLE key several times to display
.
3 Press the
PRINT key to display
4 Press the
RE-ZERO key several times to display .
To select statistical items to output, go to step 5.
To store the statistical function mode setting, go to step 7.
To disable the statistical calculation mode, press the
RE-ZERO key to select .
･Σ(X
i
)
2
- (ΣX
i
)
2
N･(N - 1)
To store the settin
g
To select statistical
go to step 7. go to step5.
Press and hold
Press several times
Press several times
･Σ(X
i
)
2
- (ΣX
i
)
2
N･(N - 1)
Standard deviation
Average
Maximum value - Average
Average
Maximum value - Average
Average