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 Print on the Quality Control Statistics screen.
2.
To print QC statistics for an entire lot, activate Print lot to date button
and press Print.
3.
To print monthly QC statistics, activate Print for period.
Select the month, using up and down buttons. Then press Print.
4.
Press Back to return to the Quality Control Statistics screen.
Continued on next page
9-14
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