Rice Lake FX-i WP Series, A&D Weighing - Manual (Page 22)

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5-4 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 and coefficient of variation. What statistical items to output can be selected
from the three 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 and coefficient of variation are obtained by the equation below:
Standard deviation= where Xi is the i-th weight data, N is number of data.
Standard deviation
Coefficient of variation (CV)= x 100 (%)
Average
5-4-1 Getting Started
Switching to the Statistical Function Mode (Changing The Function Table)
1 Press and hold the SAMPLE key until ba5fnc of
the function table is displayed, then release the key.
2 Press the SAMPLE key several times to display
ap fnc .
3 Press the PRINT key to display
apf 0 .
4 Press the RE-ZERO key to display
apf 2 .
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
apf 0 .