9. Data management
ABL800 FLEX Operator's Manual
Quality Control Log,
Continued
Month-to-date
statistics are obtained from all measurements taken on the current
lot of a control solution over the course of the month – see
QC Statistics in Quality
control setup
in
chapter 3
for information.
Viewing quality
control statistics
(continued)
Lot-to-date
statistics are obtained from all measurements taken over the entire
course of the current lot of the control solution.
The
Month-to-date
and
Lot-to-date
statistics give the following information:
Item Description
N
Number of measurements included in statistics for the slot.
Mean
Calculated mean of the measurement values*.
2 SD
Calculated 2
×
standard deviation of measurement values*.
CV
Coefficient of variation*.
Control Range Current control range for the control solution level.
* See
Quality Control Systems Reference Manual
for detailed information.
Printing QC
statistics
To print QC statistics, do the following:
Step Action
1.
Press
on the
Quality Control Statistics
screen.
2.
To print QC statistics for an entire lot, activate
Print lot to date
button
and press
.
3.
To print monthly QC statistics, activate
Print for period
.
Select the month, using up and down buttons. Then press
.
4.
Press
Back
to return to the
Quality Control Statistics
screen.
Continued on next page
9-14
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