Metrohm 756 KF Coulometer - Manual (Page 45)

3.8 Statistics calculations
756/831 KF Coulometer, Instructions of Use 37
3.8 Statistics calculations
Mean values, absolute and relative standard deviations are calculated.
The key <DEF> is used to allocate results for statistics
calculation.
The entries are specific to the method and are stored in
the method memory.
Mean (in expert mode only):
Assigns values for statistics calculations.
The display texts of the Coulometer are shown to the
left. The values are the default values. Inquiries which
also appear in the standard operation mode are high-
lighted in gray.
>mean
MN1=RS1
MN2=
⋮
MN9=
Allocations for statistics calculations
Mean number 1...9 (RSX, H2O, CXX)
You can perform statistics calculations using up to 9
results (RSX), endpoint (H2O) or variables (CXX). For
MN1, the default value RS1 is entered (for KFC-B,
MN1=RS2).
Delete allocation with <CLEAR> + <ENTER>
Each mode has an inquiry group
>statistics
in key
<PARAM>
>statistics
status: OFF
mean n= 2
res.tab: original
delete n= 1
Statistics calculation
Status of statistics calculation (OFF, ON)
If the statistics calculation is switched off, the following
inquiries regarding the statistics do not appear.
Mean value calculation from n single results (2...20)
Result table (original, delete n, delete all)
original
: The original table is used. Deleted
individual results are again incorporated in
the evaluation.
delete n
: Deletion of single results with the index n.
delete all
: The entire table is deleted.
Delete data from sample number n (1...20)
The deleted result is removed from the statistics
calculation.
def
>formula
>silo calculations
>common variables
>report
>mean
PARAM
DEF
(
2